samus: Add ACPI MADT interrupt override for GPIO IRQ 14

This interrupt needs to be specified in the MADT before it can
be used by the kernel driver.

TEST=emerge-samus chromeos-coreboot-samus

This was also tested on bolt by configuring the touchscreen to use
a shared GPIO interrupt:

localhost ~ $ grep atmel_mxt_ts /proc/interrupts
54:    24    188    93    124    LP-GPIO-demux    atmel_mxt_ts

Change-Id: Ic920a792a203cb06cd4529815680584a21532106
Signed-off-by: Duncan Laurie <>
Reviewed-by: Aaron Durbin <>
1 file changed