drm/bridge: it6505: use drm_debug_enabled() in it6505_debug_print()

As made mention of in commit 9f0ac028 ("drm/print: rename drm_debug
to __drm_debug to discourage use"), we shouldn't explicitly refer to
__drm_debug in this context. So, use drm_debug_enabled() instead.

Fixes: b5c84a9e ("drm/bridge: add it6505 driver")
Signed-off-by: Hamza Mahfooz <someguy@effective-light.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220910224816.15058-1-someguy@effective-light.com

drivers/gpu/drm/bridge/ite-it6505.c

@@ -563,7 +563,7 @@ static void it6505_debug_print(struct it6505 *it6505, unsigned int reg,
 	struct device *dev = &it6505->client->dev;
 	int val;
 
-	if (likely(!(__drm_debug & DRM_UT_DRIVER)))
+	if (!drm_debug_enabled(DRM_UT_DRIVER))
 		return;
 
 	val = it6505_read(it6505, reg);