msm: krait-regulator-pmic: create bit definitions for unexpected config

It will be helpful if we store what was unexpected instead of indicating
something was unexpected for gang regulator configuration.
Create bit definitions for all the possible incorrect configurations and
set it in the unexpected_config flag appropriately.

Change-Id: Ibaad7e49d2354ba4aefc5143c87194dddf486af6
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>