drm: bridge: dw-hdmi: Rename CONF0 SPARECTRL bit to SVSRET

The bit is documented in a Rockchip BSP as

 #define m_SVSRET_SIG		(1 << 5) /* depend on PHY_MHL_COMB0=1 */

This is confirmed by a Renesas platform, which uses a 2.0 DWC HDMI TX as
the RK3288. Rename the bit accordingly.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-13-laurent.pinchart+renesas@ideasonboard.com
diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c
index b4fb0bd..06c252f 100644
--- a/drivers/gpu/drm/bridge/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/dw-hdmi.c
@@ -895,11 +895,11 @@ static void dw_hdmi_phy_enable_tmds(struct dw_hdmi *hdmi, u8 enable)
 			 HDMI_PHY_CONF0_ENTMDS_MASK);
 }
 
-static void dw_hdmi_phy_enable_spare(struct dw_hdmi *hdmi, u8 enable)
+static void dw_hdmi_phy_enable_svsret(struct dw_hdmi *hdmi, u8 enable)
 {
 	hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
-			 HDMI_PHY_CONF0_SPARECTRL_OFFSET,
-			 HDMI_PHY_CONF0_SPARECTRL_MASK);
+			 HDMI_PHY_CONF0_SVSRET_OFFSET,
+			 HDMI_PHY_CONF0_SVSRET_MASK);
 }
 
 static void dw_hdmi_phy_gen2_pddq(struct dw_hdmi *hdmi, u8 enable)
@@ -1014,7 +1014,7 @@ static int hdmi_phy_configure(struct dw_hdmi *hdmi, int cscon)
 	dw_hdmi_phy_gen2_pddq(hdmi, 0);
 
 	if (hdmi->dev_type == RK3288_HDMI)
-		dw_hdmi_phy_enable_spare(hdmi, 1);
+		dw_hdmi_phy_enable_svsret(hdmi, 1);
 
 	/*Wait for PHY PLL lock */
 	msec = 5;