clk: imx: Remove CLK_IS_ROOT

This flag is a no-op now. Remove usage of the flag.

Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h
index c94ac5c..d942f57 100644
--- a/drivers/clk/imx/clk.h
+++ b/drivers/clk/imx/clk.h
@@ -87,7 +87,7 @@
 
 static inline struct clk *imx_clk_fixed(const char *name, int rate)
 {
-	return clk_register_fixed_rate(NULL, name, NULL, CLK_IS_ROOT, rate);
+	return clk_register_fixed_rate(NULL, name, NULL, 0, rate);
 }
 
 static inline struct clk *imx_clk_divider(const char *name, const char *parent,