modules: gpioaei only on ACPI-supporting archs

Approved by: re (kib)
Fixes: 9709bda03cd0 ("GPIO: Add ACPI _AEI support")
Pointy-hat to: cperciva
Sponsored by: Amazon

(cherry picked from commit 6540ac118473dde29cb02f786c79c64f73834ca1)
(cherry picked from commit 5a53843aef490bda32397e80b3fb600e802b461c)