ANDROID: irqchip: qcom-pdc: Re-apply work to convert to IRQCHIP helpers

This fixes a mangled merge from the 5.15-rc1 cycle.

Fixes: bddc58eb ("Merge 7d6e3fa8 ("Merge tag 'irq-core-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip"

) into android-mainline")
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Change-Id: I2ccfcf4509d3d29f63be2b67830e5bcb1a06569f