msm: board-8930: Add correct regulators for isa1200 chip

The regulators used by isa1200 in 8930 are different from
schematics. So, fix the regualtor entries for isa1200.

CRs-fixed: 473633
Change-Id: I4a8edd1428f93810b7216c4b4efb878c12820925
Signed-off-by: Mohan Pallaka <mpallaka@codeaurora.org>