ARM: mach-pcm038: Fix field name of regulator_consumer_supply struct

Building imx_v4_v5_defconfig generates the following error:

arch/arm/mach-imx/mach-pcm038.c:236: error: unknown field 'dev' specified in initializer
make[1]: *** [arch/arm/mach-imx/mach-pcm038.o] Error 1

Fix it by providing the correct "dev_name" field name.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-imx/mach-pcm038.c

@@ -233,7 +233,7 @@ static struct regulator_init_data sdhc1_data = {
 
 static struct regulator_consumer_supply cam_consumers[] = {
 	{
-		.dev	= NULL,
+		.dev_name = NULL,
 		.supply	= "imx_cam_vcc",
 	},
 };