irqchip/apple-aic: Add support for "apple,t8122-aic3"

irqchip/apple-aic: Add support for "apple,t8122-aic3"

Introduce support for the new AICv3 hardware block in t8122 and t603x
SoCs. AICv3 is similar to AICv2 but has an increased IRQ config offset.

These MMIO offsets are coded as properties of the "aic,3" node in Apple's
device tree. The actual offsets are the same for all SoCs starting from M3
through at least M5.

So do not bother to follow suit but use AICv3 specific defines in the
driver.  The compatible string is SoC specific so future SoCs with AICv3
and different offsets would just use their own compatible string as base
and add their new offsets.

Signed-off-by: Janne Grunau <j@jannau.net>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Sven Peter <sven@kernel.org>
Link: https://patch.msgid.link/20260223-irq-apple-aic3-v3-2-2b7328076b8d@jannau.net