drivers: irqchip: Add support to make mpm as module

To make the mpm driver as module driver, register the
mpm driver to platform bus driver and create the
both gic and gpio irq domains in its probe function.
Also add the support for mpm pin to gic irq number
translation to send irq info to its parent gic domain.

Also add the select and match function support to gpio
chip domain to differentiate it from gic interrupt domain.

Change-Id: I433f3a5b895d0ca074bae986ad5154892d7a31c4
Signed-off-by: Raghavendra Kakarla <rkakarla@codeaurora.org>