clk: versatile: Remove CLK_IS_ROOT

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

Cc: Pawel Moll <pawel.moll@arm.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/drivers/clk/versatile/clk-icst.c b/drivers/clk/versatile/clk-icst.c
index 3bca438..5e9b652 100644
--- a/drivers/clk/versatile/clk-icst.c
+++ b/drivers/clk/versatile/clk-icst.c
@@ -170,7 +170,7 @@
 
 	init.name = name;
 	init.ops = &icst_ops;
-	init.flags = CLK_IS_ROOT;
+	init.flags = 0;
 	init.parent_names = (parent_name ? &parent_name : NULL);
 	init.num_parents = (parent_name ? 1 : 0);
 	icst->map = map;