A set of fixes for interrupt chip drivers:
- Prevent loss of state in the MIPS GIC interrupt controller.
- Disable pseudo NMIs on Mediatek based Chromebooks as they have
firmware issues which cause instantenous chrashes and freezes
wen pseudo NMIs are used.
- Fix the error handling path in the MBIGEN driver and a defined but not
used warning in the meson-gpio interrupt chip driver.