FROMLIST: drivers: irqchip: add PDC irqdomain for wakeup capable GPIOs

Introduce a new domain for wakeup capable GPIOs. The domain can be
requested using the bus token DOMAIN_BUS_WAKEUP. In the following
patches, we will specify PDC as the wakeup-parent for the TLMM GPIO
irqchip. Requesting a wakeup GPIO will setup the GPIO and the
corresponding PDC interrupt as its parent.

Co-developed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Lina Iyer <ilina@codeaurora.org>

BUG: 141169320
TEST: Build and boot

Change-Id: Iaec0f39c86776d3f8cebe869c4ccaaba541c7ad5
Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
Link: https://patchwork.kernel.org/patch/11145357