norflash: Add nor_erase() to NOR driver
Roberto Vargas authored
NOR memory only supports setting bits to 1. To clear a bit, set to zero,
the NOR memory needs to be erased.

Change-Id: Ia82eb15a5af9a6d4fc7e5ea2b58e6db87226b351
Signed-off-by: default avatarRoberto Vargas <roberto.vargas@arm.com>
784502ae
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arm
common