drm: use ATOMIC64_INIT() for atomic64_t

use ATOMIC64_INIT() not ATOMIC_INIT() for atomic64_t

Fixes: 3f09a0c ("drm: Add common fdinfo helper")
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240111023045.50013-1-jsg@jsg.id.au
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/drm_file.c

@@ -129,7 +129,7 @@ bool drm_dev_needs_global_mutex(struct drm_device *dev)
  */
 struct drm_file *drm_file_alloc(struct drm_minor *minor)
 {
-	static atomic64_t ident = ATOMIC_INIT(0);
+	static atomic64_t ident = ATOMIC64_INIT(0);
 	struct drm_device *dev = minor->dev;
 	struct drm_file *file;
 	int ret;