drm/radeon/hdmi: separate evergreen code

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 143ab0c..9783178 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1841,10 +1841,18 @@
 
 };
 
+extern struct radeon_hdmi_acr r600_hdmi_acr(uint32_t clock);
+
 extern void r600_hdmi_enable(struct drm_encoder *encoder);
 extern void r600_hdmi_disable(struct drm_encoder *encoder);
 extern void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode);
 
+/*
+ * evergreen functions used by radeon_encoder.c
+ */
+
+extern void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode);
+
 extern int ni_init_microcode(struct radeon_device *rdev);
 extern int ni_mc_load_microcode(struct radeon_device *rdev);