platform: msm_shared: A/B support enable for lk

Add A/B support API's, update partition indexing for A/B tables
for automotive.

This is a variant change of these changes from mobile:
I65fdbd8ba73213c7628bd647218840654a6ab7ac
I28f8482fb3c9097cd95b2058bf39e9d4ae17b748

Change-Id: I36558c27c7d71eb98b3c396991aba496e2a53512