ARM: dts: msm: Add TSC device to mpq8092

Add TSC (Transport Stream Controller) device to mpq8092.
TSC is part of the broadcast subsystem in mpq8092 and has
pinctrl definitions that were updated accordingly.

Change-Id: I45a676a6863973eff82ae325fb76d6d2740a13ce
Signed-off-by: Anat Etzion-Fuchs <aetzion@codeaurora.org>