dm: arm: zynq: Convert serial driver to driver model

This series updates the Zynq serial driver to use driver model. Along the way several problems are fixed:

- Support for /chosen/stdout-path using an alias
- Fix to fdtgrep which is currently breaking alias building
- Avoid building u-boot-spl-dtb.bin when it is not requested
- Deal with boards which have BSS in SDRAM

For zynq this series makes a few changes:
- Use the new SPL init procedure, which just involves a few tweaks for zynq
- Add debug UART support
- Move to using a separate device tree instead of embedded

Only zybo has been tested. Testing on other zynq boards is welcome. They are all set up roughly the same so I expect only minor problems.

This serial includes Michal's zynqmp device tree patch.

Changes in v2:
- Extend list of compatible strings with cadence compatible string.

Michal Simek (1):
ARM: zynqmp: Enable DM and OF binding

Simon Glass (13):
fdt: Add a function to look up a /chosen property
fdt: Correct handling of alias regions
fdtgrep: Simplify the alias generation code
dm: serial: Deal with stdout-path with an alias
dm: spl: Generate u-boot-spl-dtb.bin only when enabled
dm: spl: Support device tree when BSS is in a different section
arm: zynq: Use separate device tree instead of embedded
arm: zynq: Drop unnecessary code in SPL board_init_f()
arm: zynq: Support the debug UART
dm: arm: zynq: Enable device tree control in SPL
arm: zynq: dts: Add U-Boot device tree additions
arm: zynq: serial: Drop non-device-tree serial driver portions
arm: zynq: Move serial driver to driver model

 Kconfig                            |  10 +
 arch/arm/Kconfig                   |   7 +
 arch/arm/dts/Makefile              |   2 +-
 arch/arm/dts/zynq-7000.dtsi        |   1 +
 arch/arm/dts/zynq-microzed.dts     |   5 +
 arch/arm/dts/zynq-picozed.dts      |   5 +
 arch/arm/dts/zynq-zc702.dts        |   1 +
 arch/arm/dts/zynq-zc706.dts        |   1 +
 arch/arm/dts/zynq-zc770-xm010.dts  |   1 +
 arch/arm/dts/zynq-zc770-xm011.dts  |   1 +
 arch/arm/dts/zynq-zc770-xm012.dts  |   1 +
 arch/arm/dts/zynq-zc770-xm013.dts  |   1 +
 arch/arm/dts/zynq-zed.dts          |   1 +
 arch/arm/dts/zynq-zybo.dts         |   1 +
 arch/arm/dts/zynqmp-ep108.dts      | 164 ++++++++++++++++
 arch/arm/dts/zynqmp.dtsi           | 385 +++++++++++++++++++++++++++++++++++++
 arch/arm/mach-zynq/spl.c           |  12 +-
 arch/arm/mach-zynq/u-boot-spl.lds  |  10 +-
 configs/xilinx_zynqmp_ep_defconfig |   3 +-
 configs/zynq_microzed_defconfig    |   2 +-
 configs/zynq_picozed_defconfig     |   2 +-
 configs/zynq_zc702_defconfig       |   2 +-
 configs/zynq_zc706_defconfig       |   2 +-
 configs/zynq_zc70x_defconfig       |   2 +-
 configs/zynq_zc770_xm010_defconfig |   2 +-
 configs/zynq_zc770_xm011_defconfig |   2 +-
 configs/zynq_zc770_xm012_defconfig |   2 +-
 configs/zynq_zc770_xm013_defconfig |   2 +-
 configs/zynq_zed_defconfig         |   2 +-
 configs/zynq_zybo_defconfig        |   6 +-
 drivers/serial/Kconfig             |   7 +
 drivers/serial/serial-uclass.c     |  30 ++-
 drivers/serial/serial_zynq.c       | 203 ++++++++++---------
 include/asm-generic/sections.h     |   1 +
 include/configs/xilinx_zynqmp.h    |   4 +-
 include/configs/xilinx_zynqmp_ep.h |   1 -
 include/configs/zynq-common.h      |   6 +-
 include/configs/zynq_microzed.h    |   1 -
 include/configs/zynq_picozed.h     |   1 -
 include/configs/zynq_zc70x.h       |   1 -
 include/configs/zynq_zc770.h       |   6 -
 include/configs/zynq_zed.h         |   1 -
 include/configs/zynq_zybo.h        |   1 -

 include/fdtdec.h                   |  11 +-
 lib/fdtdec.c                       |  22 ++-
 lib/libfdt/fdt_region.c            |   2 +-
 scripts/Makefile.spl               |   2 +
 tools/fdtgrep.c                    |  32 +--
 48 files changed, 796 insertions(+), 174 deletions(-)
 create mode 100644 arch/arm/dts/zynqmp-ep108.dts
 create mode 100644 arch/arm/dts/zynqmp.dtsi