eldrid: encode the keyboard backlight and numeric pad to fw_config
eldrid: encode the keyboard backlight and numeric pad to fw_config

Follow volteer(https://crrev.com/c/2397933).
Encode the keyboard backlight and numeric pad feature
to the fw_config.

BUG=b:168426960
BRANCH=none
TEST=make -j BOARD=eldrid
TEST=make buildall

Signed-off-by: Scott Chao <8cefa9751fac9aaa897ba1213763a96ba8dbd20d@wistron.corp-partner.google.com>
Change-Id: Ie2282c2eb61b4c65e36cdf65654e74de1cde7b37
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2428344
Reviewed-by: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@chromium.org>

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