ARM : dts: msm: Enable the wake-up capability of SPMI on msmtitanium

As RPM based wake-up support is now enabled on msmtitanium, make SPMI
based interrupts wakeup capable.

Change-Id: I8d13c0c598b6e3bdd96cf7eaefb442b1ae10d371
Signed-off-by: Alok Chauhan <alokc@codeaurora.org>