storm: add support for WW with new memory (NT5CC256M16DP-DI)

Whirlwind with new memory report board ID 4.

BUG=chrome-os-partner:46330, chrome-os-partner:47200
BRANCH=None
TEST=When booted on the new WW board, the board ID is
displayed as 4 and the device tree choosen is
"google,whirlwind-sp5". The board boots successfully.

Change-Id: I6e655f60b5192cf441129eba780929b98e218f8b
Signed-off-by: Suresh Rajashekara <sureshraj@google.com>
Reviewed-on: https://chromium-review.googlesource.com/322481
Reviewed-by: Kan Yan <kyan@google.com>
Commit-Queue: Suresh Rajashekara <sureshraj@chromium.org>
Tested-by: Suresh Rajashekara <sureshraj@chromium.org>
2 files changed