irqchip/meson-gpio: Add support for meson s4 SoCs

The meson s4 SoCs support 12 gpio irq lines compared with previous
serial chips and have something different, details are as below.

IRQ Number:
- 80:68 13 pins on bank Z
- 67:48 20 pins on bank X
- 47:36 12 pins on bank H
- 35:24 12 pins on bank D
- 23:22 2  pins on bank E
- 21:14 8  pins on bank C
- 13:0  13 pins on bank B

Signed-off-by: Qianggui Song <qianggui.song@amlogic.com>
[maz: fixed some W=1 build warnings]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220225055207.1048-5-qianggui.song@amlogic.com