This change defines SAR sensor device into devicetree.cb.
Since only LTE sku has SAR sensor, we will use GPP_B20 as a device_present_gpio.
BUG=None
BRANCH=poppy
TEST=Verified SAR sensor device is loaded by driver in Chrome OS
Change-Id: Ib4969e4b82d18b1b1a599de8226c2d7d4bda7915
Signed-off-by: Seunghwan Kim <sh_.kim@samsung.com>
Reviewed-on: https://review.coreboot.org/27149
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>