dt-bindings: clk: rpmh: Add support for CPUSS GNOC clock IDs

CPUSS GNOC clock is required to be used by clients, thus add
the clock IDs.

Change-Id: I0a40c7d91622756d758760ebfd2e7761e5262f22
Signed-off-by: Naveen Yadav <naveenky@codeaurora.org>