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 84b4a51fce ("selftests:
add new kallsyms selftests").

Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20250306162117.18876-1-petr.pavlu@suse.com
Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>

MAINTAINERS

@@ -15982,7 +15982,7 @@ F:	include/dt-bindings/clock/mobileye,eyeq5-clk.h
 
 MODULE SUPPORT
 M:	Luis Chamberlain <mcgrof@kernel.org>
-R:	Petr Pavlu <petr.pavlu@suse.com>
+M:	Petr Pavlu <petr.pavlu@suse.com>
 R:	Sami Tolvanen <samitolvanen@google.com>
 R:	Daniel Gomez <da.gomez@samsung.com>
 L:	linux-modules@vger.kernel.org
@@ -15993,8 +15993,10 @@ F:	include/linux/kmod.h
 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 <sravanhome@gmail.com>