ARM: dts: msm: Enable MPP2 and MPP4 for pmtitanium

ADC channels pa_therm and case_therm are configured to MPP2
and MPP4 respectively.Enable the status of the nodes.

Change-Id: Ic9074e4a78c348473448a4e86c8bac30384f0a9c
Signed-off-by: Rama Krishna Phani A <rphani@codeaurora.org>