ARM: dts: msm: remove not-wakeup property from SPMI configuration

MPM is configured to handle interrupts in deep sleep, enable wakeup
capability of SPMI based interrupts.

Change-Id: Ib926858fc599eeca208ef469d4ce39cc131e3f7f
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>