coredump: remove redundant defines for dumpable states

The existing SUID_DUMP_* defines duplicate the newer SUID_DUMPABLE_*
defines introduced in 54b501992dd2 ("coredump: warn about unsafe
suid_dumpable / core_pattern combo").  Remove the new ones, and use the
prior values instead.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reported-by: Chen Gang <gang.chen@asianux.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Alan Cox <alan@linux.intel.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Doug Ledford <dledford@redhat.com>
Cc: Serge Hallyn <serge.hallyn@canonical.com>
Cc: James Morris <james.l.morris@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 252544c..85ff3a4 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -11,6 +11,7 @@
 
 #include <linux/sched.h>
 #include <linux/proc_fs.h>
+#include <linux/binfmts.h>
 struct  ctl_table_header;
 struct  mempolicy;
 
@@ -108,7 +109,7 @@
 	if (mm)
 		dumpable = get_dumpable(mm);
 	task_unlock(task);
-	if (dumpable == SUID_DUMPABLE_ENABLED)
+	if (dumpable == SUID_DUMP_USER)
 		return 1;
 	return 0;
 }