regulator: cpr3-hmss-regulator: define fuse combo to be CPR revision fuse

Define the cpr3-hmss-regulator fuse combo to be equal to the CPR
fusing revision fuse value.  Provide driver support for all
possible revision values (i.e. 0 to 7).  This ensures that device
tree configurations determine the which specific revisions are
allowed.

Change-Id: I4612160d17c33114dd3821f879926570f5dce8e0
Signed-off-by: David Collins <collinsd@codeaurora.org>