regulator: mem-acc-regulator: Add override ACC configuration support

Some targets need override ACC configuration for ACC_SEL, L1/L2 custom
data to be applied based on allocated fuse bit. Add support to read
allocated fuse selection bit and apply the override configuration if
the fuse bit is set.

CRs-Fixed: 775309
Change-Id: I34690c245dbbe7914b36f6810eadd735002cc4bb
Signed-off-by: Tirupathi Reddy <tirupath@codeaurora.org>