clk: msm: clock: Add support for programming the DCC AHB clock register

The gcc_dcc_ahb_clk needs to be controlled by the HLOS clock
driver on MSMCOBALT since its use is restricted to the HLOS
debug driver.

CRs-Fixed: 988930
Change-Id: I1abef9f1268080dbe5dba1e91f4b84fab03ce66c
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>