pinctrl: meson-g12a: add GPIOC_7 pcie_clkreqn pinmux

Amlogic G12 exposes PCIe clock request signal on GPIOC_7 pinmux func 1

Add the relevant pinmux and pin groups

Signed-off-by: Da Xue <da@libre.computer>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/20250814181236.1956731-1-da@libre.computer


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>