MAINTAINERS: generalize vm-event/monitor entry

Replace Arm- and x86-specific lines with wildcard ones, thus covering
all architectures. Uniformly permit an extra sub-directory level to be
used, as is already the case for xen/include/.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Tamas K Lengyel <tamas@tklengyel.com>

MAINTAINERS

@@ -559,14 +559,18 @@ R:	Alexandru Isaila <aisaila@bitdefender.com>
 R:	Petre Pircalabu <ppircalabu@bitdefender.com>
 S:	Supported
 F:	tools/misc/xen-access.c
+F:	xen/arch/*/*/mem_access.c
+F:	xen/arch/*/*/monitor.c
+F:	xen/arch/*/*/vm_event.c
+F:	xen/arch/*/include/asm/*/mem_access.h
+F:	xen/arch/*/include/asm/*/monitor.h
+F:	xen/arch/*/include/asm/*/vm_event.h
+F:	xen/arch/*/include/asm/mem_access.h
+F:	xen/arch/*/include/asm/monitor.h
+F:	xen/arch/*/include/asm/vm_event.h
+F:	xen/arch/*/mem_access.c
 F:	xen/arch/*/monitor.c
 F:	xen/arch/*/vm_event.c
-F:	xen/arch/arm/mem_access.c
-F:	xen/arch/x86/include/asm/hvm/monitor.h
-F:	xen/arch/x86/include/asm/hvm/vm_event.h
-F:	xen/arch/x86/mm/mem_access.c
-F:	xen/arch/x86/hvm/monitor.c
-F:	xen/arch/x86/hvm/vm_event.c
 F:	xen/common/mem_access.c
 F:	xen/common/monitor.c
 F:	xen/common/vm_event.c