ARM: imx/pcm038: make regulator platform data static

This fixes the following sparse warning:

	arch/arm/mach-imx/pcm970-baseboard.c:203:30: warning: symbol 'pcm970_sja1000_platform_data' was not declared. Should it be static?
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

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

@@ -257,7 +257,7 @@ static struct regulator_init_data cam_data = {
 	.consumer_supplies = cam_consumers,
 };
 
-struct mc13783_regulator_init_data pcm038_regulators[] = {
+static struct mc13783_regulator_init_data pcm038_regulators[] = {
 	{
 		.id = MC13783_REGU_VCAM,
 		.init_data = &cam_data,