soc: qcom: dcc_v2: Avoid dcc_sram_writel overstep

If the config_list is too long,they may beyond the capacity of Dcc sram,
so add verification before dcc_sram_writel.

Change-Id: Id9d4f12830cd52cf84a2cba1a913f0f3b28b4fe5
Signed-off-by: Yuanfang Zhang <zhangyuanfang@codeaurora.org>