qemu: backport a patch to optionally disable i8042 (AT and PS/2) hardware
Backport a patch from upstream (will be in qemu 7.0) to add an option to
disable the legacy i8042 support (AT keyboard, PS/2 mouse). These
devices are very historical and modern Linux environments use USB anyway.
Signed-off-by: Ross Burton <ross.burton@arm.com> Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>