OMAPDSS: HDMI: PHY changes for OMAP5

OMAP5 HDMI PHY has some differences compared to OMAP4 HDMI PHY. This
patch creates a features struct which help the driver configure the PHY
based on what SoC it is.

Some of the features aren't currenlty used, but will come in use later.

Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/fbdev/omap2/dss/hdmi.h b/drivers/video/fbdev/omap2/dss/hdmi.h
index 0e5979e..1819f93 100644
--- a/drivers/video/fbdev/omap2/dss/hdmi.h
+++ b/drivers/video/fbdev/omap2/dss/hdmi.h
@@ -80,6 +80,7 @@
 #define HDMI_TXPHY_DIGITAL_CTRL			0x4
 #define HDMI_TXPHY_POWER_CTRL			0x8
 #define HDMI_TXPHY_PAD_CFG_CTRL			0xC
+#define HDMI_TXPHY_BIST_CONTROL			0x1C
 
 enum hdmi_pll_pwr {
 	HDMI_PLLPWRCMD_ALLOFF = 0,