OMAPDSS: HDMI: split PLL enable & config

At the moment we have one function, hdmi_pll_enable, which enables the
PLL and writes the PLL configuration to registers.

To make the HDMI PLL ahere to the DSS PLL API, split the hdmi_pll_enable
into two parts: hdmi_pll_enable which enables the PLL HW, and
hdmi_pll_set_config which writes the config.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/fbdev/omap2/dss/hdmi4.c b/drivers/video/fbdev/omap2/dss/hdmi4.c
index 2094b6e..98aa910 100644
--- a/drivers/video/fbdev/omap2/dss/hdmi4.c
+++ b/drivers/video/fbdev/omap2/dss/hdmi4.c
@@ -196,13 +196,18 @@
 
 	hdmi_pll_compute(&hdmi.pll, clk_get_rate(hdmi.sys_clk), p->pixelclock);
 
-	/* config the PLL and PHY hdmi_set_pll_pwrfirst */
 	r = hdmi_pll_enable(&hdmi.pll);
 	if (r) {
-		DSSDBG("Failed to lock PLL\n");
+		DSSERR("Failed to enable PLL\n");
 		goto err_pll_enable;
 	}
 
+	r = hdmi_pll_set_config(&hdmi.pll);
+	if (r) {
+		DSSERR("Failed to configure PLL\n");
+		goto err_pll_cfg;
+	}
+
 	r = hdmi_phy_configure(&hdmi.phy, hdmi.pll.info.clkdco,
 		hdmi.pll.info.clkout);
 	if (r) {
@@ -241,6 +246,7 @@
 err_phy_cfg:
 	hdmi_wp_set_phy_pwr(&hdmi.wp, HDMI_PHYPWRCMD_OFF);
 err_phy_pwr:
+err_pll_cfg:
 	hdmi_pll_disable(&hdmi.pll);
 err_pll_enable:
 	hdmi_power_off_core(dssdev);