ARM: dts: msm: Add LMH-lite interrupt to MPM bypass list for MSM8994V2

Add LMH-lite interrupt to the MPM bypass list by mapping
the LMH lite interrupt to MPM pin 0xff.

Though LMH Lite interrupt is not monitored by MPM, not
having the interrupt in the MPM bypass list will make
MPM to veto XO shutdown.

CRs-Fixed: 704088
Change-Id: Iff3561628a2341fa721cc1c0cb6777b3f7ccda66
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>