clk: imx: Add CLK_IS_CRITICAL flag for busy divider and busy mux

The busy divider and busy mux is actually used by the system critical clocks,
so add 'CLK_IS_CRITICAL' to clocks registered with these two type.

Signed-off-by: Bai Ping <ping.bai@nxp.com>
Acked-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/imx/clk-busy.c

@@ -101,7 +101,7 @@ struct clk *imx_clk_busy_divider(const char *name, const char *parent_name,
 
 	init.name = name;
 	init.ops = &clk_busy_divider_ops;
-	init.flags = CLK_SET_RATE_PARENT;
+	init.flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL;
 	init.parent_names = &parent_name;
 	init.num_parents = 1;
 
@@ -175,7 +175,7 @@ struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg, u8 shift,
 
 	init.name = name;
 	init.ops = &clk_busy_mux_ops;
-	init.flags = 0;
+	init.flags = CLK_IS_CRITICAL;
 	init.parent_names = parent_names;
 	init.num_parents = num_parents;