soc: qcom: dcc_v2: Add virtualization support for (32 bit) QCS605

Add dcc_sram_memset function in dcc_driver since hyp cannot support
virtualize stmgeia instruction in previous inline function
memset_io.

Change-Id: I2f0fc281216d897d33b421fd016a030221cc5c4d
Signed-off-by: Shaoqing Liu <shaoqingliu@codeaurora.org>