irqchip: mpm: Forward the irq type for the mpm parent

This patch adds the logic to forward the irq type from
the mpm irq domain to its parent gic irq domain.

Change-Id: Id7c42ba59e0d003ffaa0a7951be4a2d3ffdb64a4
Signed-off-by: Raghavendra Kakarla <rkakarla@codeaurora.org>