regulator: cprh-kbss-regulator: add per-cluster fuse reference voltages

Allow specification of different fuse reference voltages for
the power and performance clusters of MSMCOBALTv2 and increase
the LowSVS fuse reference voltage of the performance cluster.
This allows operation at increased voltages for SVS2 to ensure
stable operation of MSMCOBALT v2 parts.

CRs-Fixed: 1062365
Change-Id: If9f35626303321439286bd62e664e68c05ef19c5
Signed-off-by: Osvaldo Banuelos <osvaldob@codeaurora.org>