clk: rk808: Remove CLK_IS_ROOT

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

Cc: Chris Zhong <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/clk-rk808.c

···
 	if (!clk_table)
 		return -ENOMEM;
 
-	init.flags = CLK_IS_ROOT;
 	init.parent_names = NULL;
 	init.num_parents = 0;
 	init.name = "rk808-clkout1";