evm: building without EVM enabled fixes

- Missing 'inline' on evm_inode_setattr() definition.
Introduced by commit 817b54aa45db ("evm: add evm_inode_setattr to prevent
updating an invalid security.evm").

- Missing security_old_inode_init_security() stub function definition.
Caused by commit 9d8f13ba3f48 ("security: new security_inode_init_security
API adds function callback").

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/include/linux/security.h b/include/linux/security.h
index 1c528b1..f399cf1 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -2048,6 +2048,13 @@
 	return -EOPNOTSUPP;
 }
 
+int security_old_inode_init_security(struct inode *inode, struct inode *dir,
+				     const struct qstr *qstr, char **name,
+				     void **value, size_t *len)
+{
+	return -EOPNOTSUPP;
+}
+
 static inline int security_inode_create(struct inode *dir,
 					 struct dentry *dentry,
 					 int mode)