clk: rockchip: add pclk_pd_pmu to the list of rk3288 critical clocks

pclk_pd_pmu needs to keep running and with the upcoming gpio clock
handling this is not always the case anymore. So add it to the list
of critical clocks for now.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NLin Huang <hl@rock-chips.com>
Reviewed-by: NDouglas Anderson <dianders@chromium.org>
Acked-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

drivers/clk/rockchip/clk-rk3288.c

@@ -775,6 +775,7 @@ static const char *const rk3288_critical_clocks[] __initconst = {
 	"aclk_cpu",
 	"aclk_peri",
 	"hclk_peri",
+	"pclk_pd_pmu",
 };
 
 #ifdef CONFIG_PM_SLEEP