clk: rk808: Remove CLK_IS_ROOT

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

Cc: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/drivers/clk/clk-rk808.c b/drivers/clk/clk-rk808.c
index 0fee2f4..7438303 100644
--- a/drivers/clk/clk-rk808.c
+++ b/drivers/clk/clk-rk808.c
@@ -106,7 +106,6 @@
 	if (!clk_table)
 		return -ENOMEM;
 
-	init.flags = CLK_IS_ROOT;
 	init.parent_names = NULL;
 	init.num_parents = 0;
 	init.name = "rk808-clkout1";