regulator: add initialization macro of regulator supply

Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>

include/linux/regulator/machine.h

@@ -141,6 +141,13 @@ struct regulator_consumer_supply {
 	const char *supply;	/* consumer supply - e.g. "vcc" */
 };
 
+/* Initialize struct regulator_consumer_supply */
+#define REGULATOR_SUPPLY(_name, _dev_name)			\
+{								\
+	.supply		= _name,				\
+	.dev_name	= _dev_name,				\
+}
+
 /**
  * struct regulator_init_data - regulator platform initialisation data.
  *