dm: clk: Remove simple version of clk_get_by_index/name()

Simple version of clk_get_by_index() added by:
"dm: clk: Add a simple version of clk_get_by_index()"
(sha1: a4b10c088c)
is only working for #clock-cells=<1> but not for
any other values. Fixed clocks is using #clock-cells=<0>
which requires full implementation.

Remove simplified versions of clk_get_by_index() and use full version.
Also remove empty clk_get_by_name() which is failing when it is called
which is useless.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Stephen Warren <swarren@nvidia.com>

drivers/clk/clk-uclass.c

@@ -21,7 +21,6 @@ static inline struct clk_ops *clk_dev_ops(struct udevice *dev)
 }
 
 #if CONFIG_IS_ENABLED(OF_CONTROL)
-#ifdef CONFIG_SPL_BUILD
 # if CONFIG_IS_ENABLED(OF_PLATDATA)
 int clk_get_by_index_platdata(struct udevice *dev, int index,
 			      struct phandle_2_cell *cells, struct clk *clk)
@@ -38,31 +37,6 @@ int clk_get_by_index_platdata(struct udevice *dev, int index,
 	return 0;
 }
 # else
-int clk_get_by_index(struct udevice *dev, int index, struct clk *clk)
-{
-	int ret;
-	u32 cell[2];
-
-	if (index != 0)
-		return -ENOSYS;
-	assert(clk);
-	ret = uclass_get_device(UCLASS_CLK, 0, &clk->dev);
-	if (ret)
-		return ret;
-	ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset, "clocks",
-				   cell, 2);
-	if (ret)
-		return ret;
-	clk->id = cell[1];
-	return 0;
-}
-# endif /* OF_PLATDATA */
-
-int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk)
-{
-	return -ENOSYS;
-}
-#else
 static int clk_of_xlate_default(struct clk *clk,
 				struct fdtdec_phandle_args *args)
 {
@@ -119,6 +93,7 @@ int clk_get_by_index(struct udevice *dev, int index, struct clk *clk)
 
 	return clk_request(dev_clk, clk);
 }
+# endif /* OF_PLATDATA */
 
 int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk)
 {
@@ -135,7 +110,6 @@ int clk_get_by_name(struct udevice *dev, const char *name, struct clk *clk)
 
 	return clk_get_by_index(dev, index, clk);
 }
-#endif /* CONFIG_SPL_BUILD */
 #endif /* OF_CONTROL */
 
 int clk_request(struct udevice *dev, struct clk *clk)