clk: qcom: apcs-msm8916: Flag a53mux instead of a53pll as critical

The clock source for MSM8916 cpu cores is like below.

|\
a53pll --------| \ a53mux +------+
| |------------| cpus |
gpll0_vote --------| / +------+
|/

So a53mux rather than a53pll is actually the parent clock of cpu cores.
It makes more sense to flag a53mux as critical instead, so that when
either a53pll or gpll0_vote is used by cpu cores, the clock will be kept
enabled while the other can be disabled.

Signed-off-by: Shawn Guo <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/qcom/a53-pll.c

···
 	init.parent_names = (const char *[]){ "xo" };
 	init.num_parents = 1;
 	init.ops = &clk_pll_sr2_ops;
-	init.flags = CLK_IS_CRITICAL;
 	pll->clkr.hw.init = &init;
 
 	ret = devm_clk_register_regmap(dev, &pll->clkr);

drivers/clk/qcom/apcs-msm8916.c

···
 	init.parent_data = pdata;
 	init.num_parents = ARRAY_SIZE(pdata);
 	init.ops = &clk_regmap_mux_div_ops;
-	init.flags = CLK_SET_RATE_PARENT;
+	init.flags = CLK_IS_CRITICAL | CLK_SET_RATE_PARENT;
 
 	a53cc->clkr.hw.init = &init;
 	a53cc->clkr.regmap = regmap;