ARM: dts: msm: Enable the GCC clock driver on MSMCOBALT

Enable support to model the peripheral clocks instead of
using dummy clocks. We are still using dummy clocks on
RUMI until the FSM dependencies can be met.

Change-Id: If3cbed26753dd1ceb8388576d7d23344d9555d17
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>