ARM: dts: msm: Make wakegic as interrupt parent for subsystem on trinket

Each subsystem enroll with PIL framework, they register their interrupt
as wake up capable to APSS. The IRQCHIP_SKIP_SET_WAKE flag in the gic-v3
driver was missing which will give warning as "Unbalanced IRQ 19 wake
disable".

But, later after WakeGIC change in the DT and in the IRQCHIP_SKIP_SET_WAKE
flag set in mpm driver, this does not required to be set in gic-v3 driver.

If we make dt change by making wakegic as parent for the subsystem
interrupts to APSS, it will fix the warning.

Change-Id: I83a01cf27b452f6c66d8cb72d891e1ee42c954d0
Signed-off-by: Mukesh Ojha <mojha@codeaurora.org>