irqchip/meson-gpio: Use the correct register in meson_s4_gpio_irq_set_type()

irqchip/meson-gpio: Use the correct register in meson_s4_gpio_irq_set_type()

meson_s4_gpio_irq_set_type() uses the both-edge trigger register for
configuring level type and single edge mode interrupts, which is not
correct.

Use REG_EDGE_POL instead.

Fixes: bbd6fcc76b39 ("irqchip: Add support for Amlogic A4 and A5 SoCs")
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260508-a9-gpio-irqchip-v1-1-9dc5f3e022e0@amlogic.com