power: pm8921-bms: fix reading battery id
power: pm8921-bms: add support for aries's batteries

Conflicts:
	arch/arm/mach-msm/Makefile
	drivers/power/pm8921-bms.c
	include/linux/mfd/pm8xxx/pm8921-bms.h

Change-Id: Ica63602ee964aecaa8227ed58053672280a8d4c7