ARM: env: Added support for variable env sizes

Kernel fw_env config has statically defined env size
to 256KB on NAND and eMMC and 64KB on NOR flash which
requires u-boot also to be configutred the same way.

This change configures env to support differnt env sizes
and preserves the APPSBLENV and avoids CRC mismatch.

Change-Id: I55f33c17953beb8e97ebe89f215549b6eefc1a48
Signed-off-by: Gokul Sriram Palanisamy <gokulsri@codeaurora.org>
4 files changed