MAINTAINERS: Add x86 platform drivers patchwork

Add x86 platform drivers patchwork which has been missing from
MAINTAINERS.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230919123948.1583-1-ilpo.jarvinen@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

MAINTAINERS

@@ -23430,6 +23430,7 @@ M:	Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
 M:	Mark Gross <markgross@kernel.org>
 L:	platform-driver-x86@vger.kernel.org
 S:	Maintained
+Q:	https://patchwork.kernel.org/project/platform-driver-x86/list/
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git
 F:	drivers/platform/olpc/
 F:	drivers/platform/x86/