drm/meson: add support for HDMI clock support

This patchs adds support for the supported HDMI modes clocks frequencies.

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/drivers/gpu/drm/meson/meson_vclk.h b/drivers/gpu/drm/meson/meson_vclk.h
index ec62735..0401b52 100644
--- a/drivers/gpu/drm/meson/meson_vclk.h
+++ b/drivers/gpu/drm/meson/meson_vclk.h
@@ -23,12 +23,14 @@
 
 enum {
 	MESON_VCLK_TARGET_CVBS = 0,
+	MESON_VCLK_TARGET_HDMI = 1,
 };
 
 /* 27MHz is the CVBS Pixel Clock */
-#define MESON_VCLK_CVBS	27000
+#define MESON_VCLK_CVBS			27000
 
 void meson_vclk_setup(struct meson_drm *priv, unsigned int target,
-		      unsigned int freq);
+		      unsigned int vclk_freq, unsigned int venc_freq,
+		      unsigned int dac_freq, bool hdmi_use_enci);
 
 #endif /* __MESON_VCLK_H */