Add ELAN touch support
BUG=b:243120074
TEST=emerge coreboot and check ELAN touch screen is workable
Change-Id: If30232b3da9af0015d6d87535b53f905c5a30bcb
Signed-off-by: Amanda Huang <amanda_hwang@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66912
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: John Su <john_su@compal.corp-partner.google.com>
Reviewed-by: Frank Wu <frank_wu@compal.corp-partner.google.com>
Reviewed-by: Isaac Lee <isaaclee@google.com>
6cc6f42673