Platform: Fix Musca-B1 eFlash driver issue

Changes the eFlash driver functions to only check the CMD_PENDING bit
of the status register, and ignore the ARBITRATION_LOCKED bit, before
proceeding. This prevents the functions from failing unnecessarily when
an AHB access is taking priority over any APB accesses.

Change-Id: I57290e04397ee1c8f2b79219feee47990d7b8747
Signed-off-by: Jamie Fox <jamie.fox@arm.com>
1 file changed