ARM: dts: msm: Add blsp2_qup2 to list of bypass wakeup interrupts for 8996

Add blsp2_qup2 to the list of bypass wakeup interrupts in the MPM
pin mappings to allow msm8996 to enter deep sleep.

Change-Id: I4187a59116ca9d278017e81e815e5bbcd3a921e2
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>
Signed-off-by: Atul Raut <araut@codeaurora.org>
Signed-off-by: Maulik Shah <mkshah@codeaurora.org>