MAINTAINERS: repair file pattern in MEDIATEK IOMMU DRIVER

Commit 6af4873 ("MAINTAINERS: Add entry for MediaTek IOMMU") mentions
the pattern 'drivers/iommu/mtk-iommu*', but the files are actually named
with an underscore, not with a hyphen.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains:

  warning: no file matches  F:    drivers/iommu/mtk-iommu*

Repair this minor typo in the file pattern.

Signed-off-by: Lukas Bulwahn <[email protected]>
Acked-by: Yong Wu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Joerg Roedel <[email protected]>

Author: bulwahn

MAINTAINERS

@@ -11184,7 +11184,7 @@ L:	[email protected]
 L:	[email protected] (moderated for non-subscribers)
 S:	Supported
 F:	Documentation/devicetree/bindings/iommu/mediatek*
-F:	drivers/iommu/mtk-iommu*
+F:	drivers/iommu/mtk_iommu*
 F:	include/dt-bindings/memory/mt*-port.h
 
 MEDIATEK JPEG DRIVER