msm: krait-regulator: fix the cold boot sequence

One has to turn on BHS regardless of the kpss version. This gets
us to the expected APC_PWR_GATE_CONFIG register prior to enabling
sequencer.

Change-Id: I6c44f3e70b56211dae682c3b2740519f22f53f94
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>