panda: Turn on vcxio regulator

The DSI peripheral is supplied by vcxio. Set it to always on.
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index e15ca8f..981d865 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -48,6 +48,7 @@
 #include <plat/mmc.h>
 #include <plat/dma-44xx.h>
 #include <video/omap-panel-generic-dpi.h>
+#include <video/omap-panel-nokia-dsi.h>
 
 #include "hsmmc.h"
 #include "control.h"
@@ -350,12 +351,31 @@
 	.naudint_irq	= OMAP44XX_IRQ_SYS_2N,
 	.irq_base	= TWL6040_CODEC_IRQ_BASE,
 };
+
+static struct regulator_consumer_supply omap4_panda_vcxio_supply[] = {
+        OMAP_DSS_SUPPLIES,
+};
+
+
+static struct regulator_init_data omap4_panda_vcxio = {
+       .constraints = {
+               .min_uV           = 1800000,
+               .max_uV           = 1800000,
+               .valid_modes_mask = REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY,
+               .valid_ops_mask   = REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
+               .always_on        = true,
+       },
+       .num_consumer_supplies  = ARRAY_SIZE(omap4_panda_vcxio_supply),
+       .consumer_supplies      = omap4_panda_vcxio_supply,
+};
+
 /* Panda board uses the common PMIC configuration */
 static struct twl4030_platform_data omap4_panda_twldata = {
 	.audio		= &twl6040_audio,
 	/* Regulators */
 	.vusim		= &omap4_panda_vusim,
 	.vaux1		= &omap4_panda_vaux1,
+        .vcxio          = &omap4_panda_vcxio,
 };
 
 /*