ARM: dts: msm: Update chip wake up registers for atoll ab variants

Update the chip wake up register, mask bit and default
values for atoll ab variant target in order to enable
the interrupt mask bits.

Change-Id: Iba85df18c5c617cd73b27e5e3fe51e38a2fd5509
Signed-off-by: Aditya Bavanari <abavanar@codeaurora.org>