MAINTAINERS: Add maintainer to the POSIX subsystem

Add Paolo as maintainer of the POSIX subsystem.

Remove the qemu-devel@nongnu.org entry because the list is always
selected by the 'All patches CC here' section.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

MAINTAINERS

@@ -431,9 +431,12 @@ F: linux-*
 F: linux-headers/
 
 POSIX
-L: qemu-devel@nongnu.org
+M: Paolo Bonzini <pbonzini@redhat.com>
 S: Maintained
-F: *posix*
+F: os-posix.c
+F: include/sysemu/os-posix.h
+F: util/*posix*.c
+F: include/qemu/*posix*.h
 
 NETBSD
 L: qemu-devel@nongnu.org