drivers: pinctrl: msm: Add hierarchy domain support for RPM targets

Add TLMM interrupt controller to the interrupt domain hierarchy for
targets using MPM. As static irq mapping is no longer present, create
mapping when gpio is setup as interrupt line. Use legacy gpio lib calls
to create IRQ chip for targets using PDC.

Change-Id: Ia903b6c7b11cd4875632fad2335bb5b7584128a8
Signed-off-by: Raghavendra Kakarla <rkakarla@codeaurora.org>