raa489000: Keep BFET & LDO on for primary charger
raa489000: Keep BFET & LDO on for primary charger

When setting up the charger IC for low power mode in preparation for
hibernate, we need to keep the BFET and MCU LDO enabled on the primary
charger.  This is because it is what powers the wake up logic
circuitry.

BUG=b:150236134
BRANCH=None
TEST=`make -j buildall`
TEST=Build and flash waddledoo, make sure that DUT can still wake up
from hibernate.

Signed-off-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@google.com>
Change-Id: Id01c7ba8984d0577878e3b13aad02a0b6c077788
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2176758
Tested-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>
Auto-Submit: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>
Reviewed-by: Diana Z <cb2016afc7183e5356c690dc63b4ba817470501a@chromium.org>
Commit-Queue: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec