clk: qcom: msm8996: Make symbol 'cpu_msm8996_clks' static

The sparse tool complains as follows:

drivers/clk/qcom/clk-cpu-8996.c:341:19: warning:
symbol 'cpu_msm8996_clks' was not declared. Should it be static?

This variable is not used outside of clk-cpu-8996.c, so this commit
marks it static.

Fixes: 03e342dc45c9 ("clk: qcom: Add CPU clock driver for msm8996")
Reported-by: Hulk Robot <[e-mail]>
Signed-off-by: Wei Yongjun <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/qcom/clk-cpu-8996.c

···
 	.val_format_endian	= REGMAP_ENDIAN_LITTLE,
 };
 
-struct clk_regmap *cpu_msm8996_clks[] = {
+static struct clk_regmap *cpu_msm8996_clks[] = {
 	&perfcl_pll.clkr,
 	&pwrcl_pll.clkr,
 	&perfcl_alt_pll.clkr,