regulator: fixed: Use of_match_ptr() for of_match_table entry

Use the new of_match_ptr() macro for the of_match_table
pointer entry to avoid having to #define match NULL.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index f09fe7b..8bda365 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -296,8 +296,6 @@
 	{},
 };
 MODULE_DEVICE_TABLE(of, fixed_of_match);
-#else
-#define fixed_of_match NULL
 #endif
 
 static struct platform_driver regulator_fixed_voltage_driver = {
@@ -306,7 +304,7 @@
 	.driver		= {
 		.name		= "reg-fixed-voltage",
 		.owner		= THIS_MODULE,
-		.of_match_table = fixed_of_match,
+		.of_match_table = of_match_ptr(fixed_of_match),
 	},
 };