clk: fixed_rate: export clk_fixed_rate

Export the structure for others to use.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/drivers/clk/clk_fixed_rate.c b/drivers/clk/clk_fixed_rate.c
index 1fdf8c4..08cce0d 100644
--- a/drivers/clk/clk_fixed_rate.c
+++ b/drivers/clk/clk_fixed_rate.c
@@ -6,13 +6,7 @@
 #include <common.h>
 #include <clk-uclass.h>
 #include <dm.h>
-
-struct clk_fixed_rate {
-	struct clk clk;
-	unsigned long fixed_rate;
-};
-
-#define to_clk_fixed_rate(dev)	((struct clk_fixed_rate *)dev_get_platdata(dev))
+#include <linux/clk-provider.h>
 
 static ulong clk_fixed_rate_get_rate(struct clk *clk)
 {