ARM: dts: mdm9640: Update gic and gpio map

Update few non-mpm interrupts in bypass list, to enable xo
shutdown in idle pc. Also, update the right mpm pin mapping
for GPIO 81.

Change-Id: If3ccef7f93c95d973e0bcb9c156a07108701bd5c
Signed-off-by: Girish S Ghongdemath <girishsg@codeaurora.org>