MAINTAINERS: add HMM selftests

Add files for HMM selftests.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ralph Campbell <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

Author: Ralph Campbell

MAINTAINERS

@@ -7732,7 +7732,9 @@ L:	[email protected]
 S:	Maintained
 F:	Documentation/vm/hmm.rst
 F:	include/linux/hmm*
+F:	lib/test_hmm*
 F:	mm/hmm*
+F:	tools/testing/selftests/vm/*hmm*
 
 HOST AP DRIVER
 M:	Jouni Malinen <[email protected]>