drm/i915: Fix ICL output CSC programming

When I refactored the code into its own function I accidentally
misplaced the <<16 shifts for some of the registers causing us
to lose the blue channel entirely.

We should really find a way to test this...

Cc: Uma Shankar <uma.shankar@intel.com>
Fixes: d2c19b06 ("drm/i915: Clean up ilk/icl pipe/output CSC programming")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190425192419.24931-1-ville.syrjala@linux.intel.comReviewed-by: Swati Sharma <swati2.sharma@intel.com>
(cherry picked from commit d428ca17)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drivers/gpu/drm/i915/intel_color.c

@@ -173,13 +173,13 @@ static void icl_update_output_csc(struct intel_crtc *crtc,
 	I915_WRITE(PIPE_CSC_OUTPUT_PREOFF_LO(pipe), preoff[2]);
 
 	I915_WRITE(PIPE_CSC_OUTPUT_COEFF_RY_GY(pipe), coeff[0] << 16 | coeff[1]);
-	I915_WRITE(PIPE_CSC_OUTPUT_COEFF_BY(pipe), coeff[2]);
+	I915_WRITE(PIPE_CSC_OUTPUT_COEFF_BY(pipe), coeff[2] << 16);
 
 	I915_WRITE(PIPE_CSC_OUTPUT_COEFF_RU_GU(pipe), coeff[3] << 16 | coeff[4]);
-	I915_WRITE(PIPE_CSC_OUTPUT_COEFF_BU(pipe), coeff[5]);
+	I915_WRITE(PIPE_CSC_OUTPUT_COEFF_BU(pipe), coeff[5] << 16);
 
 	I915_WRITE(PIPE_CSC_OUTPUT_COEFF_RV_GV(pipe), coeff[6] << 16 | coeff[7]);
-	I915_WRITE(PIPE_CSC_OUTPUT_COEFF_BV(pipe), coeff[8]);
+	I915_WRITE(PIPE_CSC_OUTPUT_COEFF_BV(pipe), coeff[8] << 16);
 
 	I915_WRITE(PIPE_CSC_OUTPUT_POSTOFF_HI(pipe), postoff[0]);
 	I915_WRITE(PIPE_CSC_OUTPUT_POSTOFF_ME(pipe), postoff[1]);