clk: ingenic: Add missing header in cgu.h

The cgu.h has structures that contain 'clk_onecell_data' and 'clk_hw'
structures (no pointers), so the <linux/clk-provider.h> header should be
included.

Signed-off-by: Paul Cercueil <[e-mail]>
[[e-mail]: Drop removal of includes in drivers]
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/ingenic/cgu.h

···
 #define __DRIVERS_CLK_INGENIC_CGU_H__
 
 #include <linux/bitops.h>
+#include <linux/clk-provider.h>
 #include <linux/of.h>
 #include <linux/spinlock.h>