integrity: digital signature config option name change

Similar to SIGNATURE, rename INTEGRITY_DIGSIG to INTEGRITY_SIGNATURE.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h
index 4da6ba8..7a25ece 100644
--- a/security/integrity/integrity.h
+++ b/security/integrity/integrity.h
@@ -51,7 +51,7 @@
 #define INTEGRITY_KEYRING_IMA		2
 #define INTEGRITY_KEYRING_MAX		3
 
-#ifdef CONFIG_INTEGRITY_DIGSIG
+#ifdef CONFIG_INTEGRITY_SIGNATURE
 
 int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen,
 					const char *digest, int digestlen);
@@ -65,7 +65,7 @@
 	return -EOPNOTSUPP;
 }
 
-#endif /* CONFIG_INTEGRITY_DIGSIG */
+#endif /* CONFIG_INTEGRITY_SIGNATURE */
 
 /* set during initialization */
 extern int iint_initialized;