env: Finish migration of common ENV options

- Introduce CONFIG_USE_REDUND_ENV to gate redundant environment location
  or not, migrate current users to it.
ONFIG_ENV_ADDR)
- On ENV_IS_IN_REMOTE, CONFIG_ENV_OFFSET is never used.
- Add ENV_ADDR question
- Make ENV_ADDR / ENV_OFFSET depend on the env locations that use it.
- Add ENV_xxx_REDUND options that depend on their primary option and
  USE_REDUND_ENV
- On a number of PowerPC platforms, use SPL_ENV_ADDR not CONFIG_ENV_ADDR
  for the pre-main-U-Boot environment location.
- On ENV_IS_IN_SPI_FLASH, check not for CONFIG_ENV_ADDR being set but
  rather it being non-zero, as it will now be zero by default.
- In a few other places, also check for CONFIG_ENV_ADDR being non-zero
  or that we don't have certain env locations in use.
- Migrate all platforms.

Cc: Wolfgang Denk <wd@denx.de>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: uboot-stm32@st-md-mailman.stormreply.com
Signed-off-by: Tom Rini <trini@konsulko.com>
---
To do this, I used the printvars.c hack I've referenced before to have
every platform print out the values it uses, and then throw them in to
the defconfigs.

NOTE FOR STM32MP15_* BOARDS: Previously redundant environment was set
for UBI, but not SPI nor EXT4.  And while EXT4 doesn't support redundant
environment, SPI does.  I've put the redundant offset as the next flash
sector but I need you to ack this change or suggest a new location or go
with disabling redundant environment on UBI.  Thanks!
1602 files changed