dt-bindings: clock: Add support for BLAIR clock ids

Add clock IDs for GCC/GPUCC/DISPCC for clients to be able to
request for clocks from these clock controllers.

Change-Id: I2472c7f3ddaa318f217ce34088dea919e390dad1
Signed-off-by: Madhuri Medasani <mmedasan@codeaurora.org>