toradex: config block handling

This series integrates Toradex factory configuration block handling. The
config block is a data structure which gets stored to flash during production testing. The structure holds such information as board resp.
hardware revision, product ID and serial number which is used as the NIC
part of the Ethernet MAC address as well. The config block will be read
upon boot by the show_board_info() function, displayed as part of the board information and passed to Linux via device tree or ATAGs.

Changes in v3:
- introduce new patch dropping unused CONFIG_CUSTOM_BOARDINFO by ? reverting commit a9ad18c9d5fe2554753b0f9a52adfd5ebce61147
- introduce new patch making show_board_info() a weak function which ? allows for custom board specific implementations thereof
- fixup deactivation of CONFIG_DISPLAY_BOARDINFO in favour of ? CONFIG_DISPLAY_BOARDINFO_LATE which also displays on the LCD after ? recent move thereof to Kconfig
- use custom show_board_info() rather than checkboard() and ? checkboard() rather than checkboard_fallback()
- also reword commit message accordingly
- use checkboard() rather than checkboard_fallback()
- drop CUSTOM_BOARDINFO
- drop patch 1 'colibri_imx7/vf: move to custom checkboard_fallback()'
? in favour of Stefan's proposed solution

Changes in v2:
- fixed common.h include mess in board/toradex/common by renaming ? common* to tdx-common
- renamed TRDX to TDX and trdx to tdx as in common use internally
- consolidated makefiles and changed copyright message
- renamed configblock* to tdx-cfg-block* analogous to Kconfig symbols
- moved board/toradex/common/Kconfig sourcing from arch/arm/Kconfig ? into our own board Kconfig files
- use a named choice for the config block location for above to work ? without issuing any warnings (undocumented kbuild feature curtsey ? Arnaud Lacombe)
- added CUSTOM_BOARDINFO into our common Kconfig to avoid recent ? no_new_adhoc_configs_check error
- add Max' patch
? colibri_vf: usb gadget: toradex pid is now set generically

Marcel Ziswiler (6):
? Revert "generic-board: allow showing custom board info" ? generic-board: make show_board_info a weak function ? apalis/colibri_t20/t30: deactivate displaying board info ? toradex: config block handling
? apalis/colibri_imx7/pxa270/t20/t30/vf: integrate config block handling
? apalis/colibri_t30: move environment location

Max Krummenacher (1):
? colibri_vf: usb gadget: toradex pid is now set generically

?board/toradex/apalis_t30/Kconfig??????????????|??18 +
?board/toradex/apalis_t30/apalis_t30.c?????????|??12 +-
?board/toradex/colibri_imx7/Kconfig????????????|??16 +
?board/toradex/colibri_pxa270/Kconfig??????????|??11 +
?board/toradex/colibri_pxa270/colibri_pxa270.c |???8 +
?board/toradex/colibri_t20/Kconfig?????????????|??11 +
?board/toradex/colibri_t20/colibri_t20.c???????|??13 +
?board/toradex/colibri_t30/Kconfig?????????????|??18 +
?board/toradex/colibri_t30/colibri_t30.c???????|???9 +-
?board/toradex/colibri_vf/Kconfig??????????????|??14 +
?board/toradex/colibri_vf/colibri_vf.c?????????|??16 -
?board/toradex/common/Kconfig??????????????????|??76 ++++
?board/toradex/common/Makefile?????????????????|??11 +
?board/toradex/common/tdx-cfg-block.c??????????| 544
++++++++++++++++++++++++++
?board/toradex/common/tdx-cfg-block.h??????????|??68 ++++
?board/toradex/common/tdx-common.c?????????????| 168 ++++++++
?board/toradex/common/tdx-common.h?????????????|??13 +
?common/board_info.c???????????????????????????|???4 +-
?configs/apalis_t30_defconfig??????????????????|???1 +
?configs/colibri_t20_defconfig?????????????????|???1 +
?configs/colibri_t30_defconfig?????????????????|???1 +
?configs/colibri_vf_defconfig??????????????????|???1 +
?include/configs/apalis_t30.h??????????????????|??11 +-
?include/configs/colibri_imx7.h????????????????|???6 +-
?include/configs/colibri_pxa270.h??????????????|???7 +-
?include/configs/colibri_t20.h?????????????????|???2 +-
?include/configs/colibri_t30.h?????????????????|??11 +-
?include/configs/colibri_vf.h??????????????????|??13 +-
?scripts/config_whitelist.txt??????????????????|???5 -

?29 files changed, 1041 insertions(+), 48 deletions(-) ?create mode 100644 board/toradex/common/Kconfig ?create mode 100644 board/toradex/common/Makefile ?create mode 100644 board/toradex/common/tdx-cfg-block.c ?create mode 100644 board/toradex/common/tdx-cfg-block.h ?create mode 100644 board/toradex/common/tdx-common.c ?create mode 100644 board/toradex/common/tdx-common.h