MAINTAINERS: repair file entry in MICROSOFT SURFACE AGGREGATOR TABLET-MODE SWITCH

Commit 9f794056 ("platform/surface: Add KIP/POS tablet-mode switch
driver") adds the section MICROSOFT SURFACE AGGREGATOR TABLET-MODE SWITCH
with a file entry, but the file that is added with this commit is actually
named slightly differently.

  file entry name: drivers/platform/surface/surface_aggregator_tablet_switch.c
  added file name: drivers/platform/surface/surface_aggregator_tabletsw.c

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains about a
broken reference.

Repair this file entry to the actual file name added with the commit above.

Fixes: 9f794056 ("platform/surface: Add KIP/POS tablet-mode switch driver")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com>
Link: https://lore.kernel.org/r/20220713040916.1767-1-lukas.bulwahn@gmail.comSigned-off-by: Hans de Goede <hdegoede@redhat.com>

MAINTAINERS

@@ -13180,7 +13180,7 @@ MICROSOFT SURFACE AGGREGATOR TABLET-MODE SWITCH
 M:	Maximilian Luz <luzmaximilian@gmail.com>
 L:	platform-driver-x86@vger.kernel.org
 S:	Maintained
-F:	drivers/platform/surface/surface_aggregator_tablet_switch.c
+F:	drivers/platform/surface/surface_aggregator_tabletsw.c
 
 MICROSOFT SURFACE BATTERY AND AC DRIVERS
 M:	Maximilian Luz <luzmaximilian@gmail.com>