feat(plat/qti/sc7280): add support for pmk7325

The qti sc7280 platform uses the pmk7325 PMIC, which has the same
functionality as the pm8998 driver, with the exception of the LC
PON register offsets, which are defined as:

Since it is nearly identical to the pm8998 driver, moving the above
register offset definitions to platform_def.h for the respective SoC
and reusing the rest of the functions defined in the pm8998 driver.
Renaming pm8998 driver to pm_ps_hold to make it more generic.

Change-Id: I0dda3a54579e0bbdd42c247405362a86d0607478
Signed-off-by: Shelley Chen <shchen@chromium.org>
5 files changed