dt-bindings: clock: Add gcc clock-ids for direwolf

Add the clock-ids for global clock controller driver for clients to be
able to request for the clocks.

Change-Id: I02c757b7b87b59f554f2b7138a3b99f99eedf4ba
Signed-off-by: Veera Vegivada <vvegivad@codeaurora.org>