clk: qcom: HDMI source sel is 3 not 2

The HDMI PLL input to the tv mux is supposed to be 3, not 2. Fix
the code so that we can properly select the HDMI PLL.

Fixes: 6d00b56f "clk: qcom: Add support for MSM8960's multimedia clock controller (MMCC)"
Reported-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

drivers/clk/qcom/mmcc-msm8960.c

@@ -1209,7 +1209,7 @@ static struct clk_branch rot_clk = {
 
 static u8 mmcc_pxo_hdmi_map[] = {
 	[P_PXO]		= 0,
-	[P_HDMI_PLL]	= 2,
+	[P_HDMI_PLL]	= 3,
 };
 
 static const char *mmcc_pxo_hdmi[] = {