arm: configs: vcm30t124: Enable PSTORE

arm: configs: vcm30t124: Enable PSTORE

Enabling CONFIG_PSTORE, CONFIG_PSTORE_RAM, CONFIG_PSTORE_CONSOLE

Pstore is a file system interface that allows to store and recover
crash information across a reboots.

Mount the pstore file system
Check for "/mnt/console-ramoops" for last boot log

mount -t pstore pstore /mnt/
cat /mnt/console-ramoops

Bug 1352942

Change-Id: I128e94dbb044fa11acfc911a0fe372a0538b5188
Signed-off-by: sreenivasulu velpula <svelpula@nvidia.com>
Reviewed-on: http://git-master/r/392259
Reviewed-by: Sandeep Trasi <strasi@nvidia.com>
Tested-by: Sandeep Trasi <strasi@nvidia.com>