apparmor: change op from int to const char *

Having ops be an integer that is an index into an op name table is
awkward and brittle. Every op change requires an edit for both the
op constant and a string in the table. Instead switch to using const
strings directly, eliminating the need for the table that needs to
be kept in sync.

Signed-off-by: John Johansen <john.johansen@canonical.com>
diff --git a/security/apparmor/domain.c b/security/apparmor/domain.c
index 84856b7..c2f1d651 100644
--- a/security/apparmor/domain.c
+++ b/security/apparmor/domain.c
@@ -750,8 +750,8 @@ int aa_change_profile(const char *ns_name, const char *hname, bool onexec,
 	struct aa_profile *profile, *target = NULL;
 	struct aa_ns *ns = NULL;
 	struct file_perms perms = {};
-	const char *name = NULL, *info = NULL;
-	int op, error = 0;
+	const char *name = NULL, *info = NULL, *op;
+	int error = 0;
 	u32 request;
 
 	if (!hname && !ns_name)