drm/i915: Allocate the pipe_crc->entires with kcalloc()

pipe_crc->entries[] is an array so allocate with kcalloc() instead of
kzalloc().
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_debugfs.c

@@ -3415,8 +3415,8 @@ static int pipe_crc_set_source(struct drm_device *dev, enum pipe pipe,
 		DRM_DEBUG_DRIVER("collecting CRCs for pipe %c, %s\n",
 				 pipe_name(pipe), pipe_crc_source_name(source));
 
-		entries = kzalloc(sizeof(*pipe_crc->entries) *
-				  INTEL_PIPE_CRC_ENTRIES_NR,
+		entries = kcalloc(INTEL_PIPE_CRC_ENTRIES_NR,
+				  sizeof(pipe_crc->entries[0]),
 				  GFP_KERNEL);
 		if (!entries)
 			return -ENOMEM;