ARM: dts: msm: Add clock controller devices for msmferrum

Add the RPM and GCC clock controller devices to the device
tree for ferrum. This will allow the clock drivers to
probe these devices and register the necessary clock tables.

RUMI needs to use dummy clocks.

Change-Id: I59a5a1c9e7329b7e9caa5ec82822c76d5822d705
Signed-off-by: Janani Venkataraman <jananiv@codeaurora.org>