ARM: OMAP2+: PRCM+SCM cleanup against 4.0-rc1

Hi,

Decided to post a new version because of the number of minor changes compared to v5, just to avoid any misunderstandings:

- dropped patch #1 ("clk: ti: fix ti_clk_get_reg_addr..."), this has been merged through clock tree now
- fixed scm_conf area size issues on am33xx/am43xx
- fixed scm area size issue on am43xx
- fixed size issues on omap3_pmx_core (was 8 bytes short)
- added warnings on omap2_clk_readl/writel in case legacy access is attempted
- fixed omap3 legacy boot
- fixed boot time warning on omap4+ where scm_conf does not contain clocks node yet (these may be added to DT later if support is required)
- fixed some randconfig warnings

Testing done:

 1: am335x-evm      : boot
 2: am335x-evmsk    : boot
 3: am3517-evm      : boot
 4: am43x-epos-evm  : boot
 5: am437x-gp-evm   : boot
 6: omap3-beagle-xm : boot
 7: omap3-beagle    : boot, cpuidle (ret/off), suspend (ret/off), legacy boot
 8: am335x-boneblack: boot
 9: am335x-bone     : boot
10: dra7xx-evm      : boot
11: omap3-n900      : boot
12: omap5-uevm      : boot
13: omap4-panda-es  : boot, cpuidle (ret), suspend (ret)
14: omap4-panda     : boot
15: omap2430-sdp    : boot
16: omap3430-sdp    : boot

17: omap4-sdp-es23plus: boot

New branch also pushed:
tree: https://github.com/t-kristo/linux-pm.git
branch: 4.0-rc1-prcm-cleanup-v6