ARM: dts: msm: Disable modem pil loading from mproc code for MSMTITANIUM

The smd and ipc-router drivers trigger the loading of the modem via
calls to subsystem_get. We now disable this functionality for msmtitanium
since power on of the modem is handled by the peripheral manager in
userspace.

CRs-Fixed: 968910
Change-Id: I3c1fa51163fabfdaae262ea604182ffdea8e0144
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>