drm/i915: Update DRIVER_DATE to 20180413

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/i915_drv.h

@@ -84,8 +84,8 @@
 
 #define DRIVER_NAME		"i915"
 #define DRIVER_DESC		"Intel Graphics"
-#define DRIVER_DATE		"20180308"
-#define DRIVER_TIMESTAMP	1520513379
+#define DRIVER_DATE		"20180413"
+#define DRIVER_TIMESTAMP	1523611258
 
 /* Use I915_STATE_WARN(x) and I915_STATE_WARN_ON() (rather than WARN() and
  * WARN_ON()) for hw state sanity checks to check for unexpected conditions