drm/i915: Clean up g4x+ sprite TILEOFF programming

We defined the bitmasks for DVSTILEOFF but never used them.
Remedy that.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230214134739.25077-3-ville.syrjala@linux.intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/display/intel_sprite.c

@@ -1217,7 +1217,8 @@ g4x_sprite_update_arm(struct intel_plane *plane,
 	}
 
 	intel_de_write_fw(dev_priv, DVSLINOFF(pipe), linear_offset);
-	intel_de_write_fw(dev_priv, DVSTILEOFF(pipe), (y << 16) | x);
+	intel_de_write_fw(dev_priv, DVSTILEOFF(pipe),
+			  DVS_OFFSET_Y(y) | DVS_OFFSET_X(x));
 
 	/*
 	 * The control register self-arms if the plane was previously