drm/i915: inline skl_copy_ddb_for_pipe() to its only caller

While things may have been different before, right now the function is
very simple and has a single caller. IMHO any possible benefits from
an abstraction here are gone and not worth the price of the current
indirection while reading the code.

Cc: Mahesh Kumar <mahesh1.kumar@intel.com>
Reviewed-by: Mahesh Kumar <mahesh1.kumar@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180607230700.28359-1-paulo.r.zanoni@intel.com

drivers/gpu/drm/i915/intel_pm.c

@@ -5141,17 +5141,6 @@ skl_compute_ddb(struct drm_atomic_state *state)
 	return 0;
 }
 
-static void
-skl_copy_ddb_for_pipe(struct skl_ddb_values *dst,
-		      struct skl_ddb_values *src,
-		      enum pipe pipe)
-{
-	memcpy(dst->ddb.uv_plane[pipe], src->ddb.uv_plane[pipe],
-	       sizeof(dst->ddb.uv_plane[pipe]));
-	memcpy(dst->ddb.plane[pipe], src->ddb.plane[pipe],
-	       sizeof(dst->ddb.plane[pipe]));
-}
-
 static void
 skl_print_wm_changes(const struct drm_atomic_state *state)
 {
@@ -5381,7 +5370,10 @@ static void skl_initial_wm(struct intel_atomic_state *state,
 	if (cstate->base.active_changed)
 		skl_atomic_update_crtc_wm(state, cstate);
 
-	skl_copy_ddb_for_pipe(hw_vals, results, pipe);
+	memcpy(hw_vals->ddb.uv_plane[pipe], results->ddb.uv_plane[pipe],
+	       sizeof(hw_vals->ddb.uv_plane[pipe]));
+	memcpy(hw_vals->ddb.plane[pipe], results->ddb.plane[pipe],
+	       sizeof(hw_vals->ddb.plane[pipe]));
 
 	mutex_unlock(&dev_priv->wm.wm_mutex);
 }