clk-provider: include clk-uclass.h

Because clk-provider use clk_ops, so let's include clk-uclass.h
Signed-off-by: NPeng Fan <peng.fan@nxp.com>

include/linux/clk-provider.h

@@ -8,6 +8,7 @@
  */
 #ifndef __LINUX_CLK_PROVIDER_H
 #define __LINUX_CLK_PROVIDER_H
+#include <clk-uclass.h>
 
 static inline void clk_dm(ulong id, struct clk *clk)
 {