msm: fsm-rfic: Add PVC index write support

Add support for TIMED RF by adding IOCTLs to write SSBI address to
PVC index registers.

Change-Id: Ia546ce8bdd501c9c4510b3eb8966bc079421bea0
Acked-by: Edward Rodrigues <erodrigu@qti.qualcomm.com>
Signed-off-by: Venkatesh Yadav Abbarapu <quicvenkat@codeaurora.org>