dtoc: Rename the phandle struct

Rather than naming the phandle struct according to the number of cells it
uses (e.g. struct phandle_2_cell) name it according to the number of
arguments it has (e.g. struct phandle_1_arg). This is a more intuitive
naming.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index e68d927..8b40326 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -23,7 +23,7 @@
 #if CONFIG_IS_ENABLED(OF_CONTROL)
 # 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)
+			      struct phandle_1_arg *cells, struct clk *clk)
 {
 	int ret;