clk: msm: clock-gcc-8996: Control gcc_aggre0_noc_mpu_cfg_ahb_clk from HLOS

Add support in the clock driver to model and control
this clock on msm8996. This clock is used by the bus
driver to set the QoS registers for the Aggre0 masters.

Change-Id: I26f94d4ea410d4c1c099c9ede0313b8704ce3d68
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>