mb/google/zork/vilboz: Enable SAR proximity sensor STH9324

mb/google/zork/vilboz: Enable SAR proximity sensor STH9324

BUG=b:161759253
BRANCH=firmware-zork-13434.B
TEST=emerge-zork coreboot chromeos-bootimage
firmware log:
\_SB.I2C2.SEMTECH SX9324: SAR Proximity Sensor at I2C: 02:28
kernel log:
INFO kernel: [   11.238644] sx932x i2c-STH9324:00: initial compensation success

Signed-off-by: Frank Wu <frank_wu@compal.corp-partner.google.com>
Change-Id: I6294ce291365443dd1c4550ba75cb7f33481b889
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45565
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Kangheui Won <khwon@chromium.org>
Reviewed-by: Sam McNally <sammc@google.com>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>