drm/print: Fix DRM_DEBUG_DP macro

This isn't supposed to take dev as an argument, I guess no one noticed!
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180718215716.5784-1-lyude@redhat.com

include/drm/drm_print.h

@@ -310,7 +310,7 @@ void drm_err(const char *format, ...);
 
 #define	DRM_DEV_DEBUG_DP(dev, fmt, ...)					\
 	drm_dev_dbg(dev, DRM_UT_DP, fmt, ## __VA_ARGS__)
-#define DRM_DEBUG_DP(dev, fmt, ...)					\
+#define DRM_DEBUG_DP(fmt, ...)						\
 	drm_dbg(DRM_UT_DP, fmt, ## __VA_ARGS__)
 
 #define _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, category, fmt, ...)	\