qca : Add u-boot CLI command "flasherase"

The "flasherase" command can be used to erase partitions in flash.

Change-Id: I1111f3a626c3a36bcef57079a10c5d6be4e1e8df
Signed-off-by: Pavithra Palanisamy <pavip@codeaurora.org>
1 file changed