ARM: dts: msm: Use interrupts-extended property for pdc irq on lito

pdc interrupt is child of interrupt controller. Hence define pdc
interrupts using interrupts-extended property having pdc phandle,
pdc output port and irq type.

Change-Id: Ibb6f157b277dee3d833ebbac7ae3b8202ab1b3c3
Signed-off-by: Pratham Pratap <prathampratap@codeaurora.org>