Add entries to the SSDT so that the volume keys, which
use the PS2 keyboard interface, are correctly registered.
Change-Id: Ie80491559de50d72bf1ff97fd30c1a74e6b0f7a6
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85695
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>