MAINTAINERS: Update the MODULE SUPPORT section

Change my role for MODULE SUPPORT from a reviewer to a maintainer. We
started to rotate its maintainership and I currently look after the modules
tree. This not being reflected in MAINTAINERS proved to confuse folks.

Add lib/tests/module/ and tools/testing/selftests/module/ to maintained
files. They were introduced previously by commit 84b4a51fce4c ("selftests:
add new kallsyms selftests").

Acked-by: Steven Rostedt (Google) <[e-mail]>
Reviewed-by: Luis Chamberlain <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Petr Pavlu <[e-mail]>

MAINTAINERS

···
 
 MODULE SUPPORT
 M:	Luis Chamberlain <[e-mail]>
-R:	Petr Pavlu <[e-mail]>
+M:	Petr Pavlu <[e-mail]>
 R:	Sami Tolvanen <[e-mail]>
 R:	Daniel Gomez <[e-mail]>
 L:	[e-mail]
···
 F:	include/linux/module*.h
 F:	kernel/module/
 F:	lib/test_kmod.c
+F:	lib/tests/module/
 F:	scripts/module*
 F:	tools/testing/selftests/kmod/
+F:	tools/testing/selftests/module/
 
 MONOLITHIC POWER SYSTEM PMIC DRIVER
 M:	Saravanan Sekar <[e-mail]>