raa489000 : clear 'Enable ADC' bit on port 1
raa489000 : clear 'Enable ADC' bit on port 1

9mW is reduced on S0iX power consumption
by clearing 'Enable ADC' bit.

BUG=b:178356507
BRANCH=none
TEST=make -j BOARD=sasuke

Signed-off-by: YongBeum.Ha <0375183cfb575c7cdd5cfe73f9fcd260a8810df7@samsung.corp-partner.google.com>
Change-Id: I585ce87bf778f8386edfe8ccaaf1aa53f0374eff
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2801175
Reviewed-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>

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