auxdisplay: charlcd: Drop unneeded initializers and switch to C99 style

For structure initializers the fields are 0 (or NULL) by default, so
there is no need to fill them explicitly. Besides that, much easier
to read when initializers use C99 style. Hence, convert to C99 style
as well.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

drivers/auxdisplay/charlcd.c

@@ -637,9 +637,7 @@ static int panel_notify_sys(struct notifier_block *this, unsigned long code,
 }
 
 static struct notifier_block panel_notifier = {
-	panel_notify_sys,
-	NULL,
-	0
+	.notifier_call = panel_notify_sys,
 };
 
 int charlcd_register(struct charlcd *lcd)