clk: uclass: clk_get_by_name() must not be available if CONFIG_OF_PLATDATA is enabled

clk_get_by_name() requires clk_get_by_id() that is not available if
CONFIG_OF_PLATDATA is defined, so move clk_get_by_name() into #else
condition of #if CONFIG_IS_ENABLED(OF_PLATDATA).

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index 93cb490..0df38bd 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -326,7 +326,6 @@
 
 	return 0;
 }
-# endif /* OF_PLATDATA */
 
 int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk)
 {
@@ -343,6 +342,7 @@
 
 	return clk_get_by_index(dev, index, clk);
 }
+# endif /* OF_PLATDATA */
 
 int clk_get_by_name_nodev(ofnode node, const char *name, struct clk *clk)
 {