drm/i915: cleanup: use ARRAY_SIZE()

NUM_TV_MODES is the same as ARRAY_SIZE(tv_modes).  In the end, I
decided it was cleaner to remove NUM_TV_MODES and just use
ARRAY_SIZE(tv_modes) through out.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

drivers/gpu/drm/i915/intel_tv.c

@@ -896,8 +896,6 @@ static const struct tv_mode tv_modes[] = {
 	},
 };
 
-#define NUM_TV_MODES sizeof(tv_modes) / sizeof (tv_modes[0])
-
 static void
 intel_tv_dpms(struct drm_encoder *encoder, int mode)
 {
@@ -1512,7 +1510,7 @@ intel_tv_set_property(struct drm_connector *connector, struct drm_property *prop
 		tv_priv->margin[TV_MARGIN_BOTTOM] = val;
 		changed = true;
 	} else if (property == dev->mode_config.tv_mode_property) {
-		if (val >= NUM_TV_MODES) {
+		if (val >= ARRAY_SIZE(tv_modes)) {
 			ret = -EINVAL;
 			goto out;
 		}
@@ -1693,13 +1691,13 @@ intel_tv_init(struct drm_device *dev)
 	connector->doublescan_allowed = false;
 
 	/* Create TV properties then attach current values */
-	tv_format_names = kmalloc(sizeof(char *) * NUM_TV_MODES,
+	tv_format_names = kmalloc(sizeof(char *) * ARRAY_SIZE(tv_modes),
 				  GFP_KERNEL);
 	if (!tv_format_names)
 		goto out;
-	for (i = 0; i < NUM_TV_MODES; i++)
+	for (i = 0; i < ARRAY_SIZE(tv_modes); i++)
 		tv_format_names[i] = tv_modes[i].name;
-	drm_mode_create_tv_properties(dev, NUM_TV_MODES, tv_format_names);
+	drm_mode_create_tv_properties(dev, ARRAY_SIZE(tv_modes), tv_format_names);
 
 	drm_connector_attach_property(connector, dev->mode_config.tv_mode_property,
 				   initial_mode);