OMAP4: TWL: add vdda_hdmi_dac regulator supply

HDMI requires vdda_hdmi_dac (vdac) power for operation. The regulator,
or the regulator supplying the vdac, has been enabled by default and
things have worked without the HDMI driver enabling the vdac.

I encountered the problem when implementing HDMI device tree support,
where the regulator was not enabled by default.

This patch adds the vdda_hdmi_dac to twl-common.c so that the HDMI
driver can use it.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/twl-common.c

@@ -258,6 +258,10 @@ static struct twl4030_usb_data omap4_usb_pdata = {
 	.phy_suspend	= omap4430_phy_suspend,
 };
 
+static struct regulator_consumer_supply omap4_vdda_hdmi_dac_supplies[] = {
+	REGULATOR_SUPPLY("vdda_hdmi_dac", "omapdss_hdmi"),
+};
+
 static struct regulator_init_data omap4_vdac_idata = {
 	.constraints = {
 		.min_uV			= 1800000,
@@ -267,6 +271,8 @@ static struct regulator_init_data omap4_vdac_idata = {
 		.valid_ops_mask		= REGULATOR_CHANGE_MODE
 					| REGULATOR_CHANGE_STATUS,
 	},
+	.num_consumer_supplies	= ARRAY_SIZE(omap4_vdda_hdmi_dac_supplies),
+	.consumer_supplies	= omap4_vdda_hdmi_dac_supplies,
 	.supply_regulator	= "V2V1",
 };