arm: mark the "[vectors]" vma as VMA_AREA_VSYSCALL

This vma looks like VSYSCALL on x86. We don't need to dump and restore it.

Currently this vma is dumped and restored as a private vma, but it is not
remmaped in a correct place:
Restore
 --- dump/pipe00/6392/1/dump.maps	2013-09-23 12:49:19.436816192 +0000
 +++ dump/pipe00/6392/1/restore.maps	2013-09-23 12:49:20.276766356 +0000
 @@ -6,5 +6,6 @@ e05000-e26000
  4009d000-4009f000
  400a0000-400aa000
  400b8000-401e7000
 +b6d6f000-b6d70000
  be838000-be859000
  ffff0000-ffff1000
ERROR: Sets of mappings differ:
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

proc_parse.c

@@ -281,7 +281,7 @@ int parse_smaps(pid_t pid, struct vm_area_list *vma_area_list, bool use_map_file
 
 		if (vma_area->vma.status != 0) {
 			continue;
-		} else if (strstr(buf, "[vsyscall]")) {
+		} else if (strstr(buf, "[vsyscall]") || strstr(buf, "[vectors]")) {
 			vma_area->vma.status |= VMA_AREA_VSYSCALL;
 		} else if (strstr(buf, "[vdso]")) {
 			vma_area->vma.status |= VMA_AREA_REGULAR;