regulator: cpr3-regulator: BUG if an unsupported CPR fuse combo is found

The cpr3-regulator driver must perform voltage and quotient
adjustments which are tied to specific CPR fuse combinations.
Applying incorrect adjustments can lead to excess power
consumption or crashes.  Therefore, call BUG_ON() if the fuse
combo found on a given chip is not supported by the device tree
configurations of a cpr3-regulator device.

Change-Id: If5b539c9050975c9ce9c44d13e50a09be300bb3f
Signed-off-by: David Collins <collinsd@codeaurora.org>