soc: qcom: dcc: Avoid dcc_sram_writel overflow

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

Change-Id: I40e8dd66f154fe4c260ad331ef89d8952b510cfa
Signed-off-by: Yuanfang Zhang <zhangyuanfang@codeaurora.org>