dm: treewide: Rename dev_get_platdata() to dev_get_plat()

Rename this to be consistent with the change from 'platdata'.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 79dce8f..75b1635 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -144,7 +144,7 @@
 	unsigned long fixed_rate;
 };
 
-#define to_clk_fixed_rate(dev)	((struct clk_fixed_rate *)dev_get_platdata(dev))
+#define to_clk_fixed_rate(dev)	((struct clk_fixed_rate *)dev_get_plat(dev))
 
 struct clk_composite {
 	struct clk	clk;