evm: building without EVM enabled fixes

- Missing 'inline' on evm_inode_setattr() definition.
Introduced by commit 817b54aa ("evm: add evm_inode_setattr to prevent
updating an invalid security.evm").

- Missing security_old_inode_init_security() stub function definition.
Caused by commit 9d8f13ba ("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>

include/linux/evm.h

@@ -45,7 +45,7 @@ static inline enum integrity_status evm_verifyxattr(struct dentry *dentry,
 }
 #endif
 
-static int evm_inode_setattr(struct dentry *dentry, struct iattr *attr)
+static inline int evm_inode_setattr(struct dentry *dentry, struct iattr *attr)
 {
 	return 0;
 }

include/linux/security.h

@@ -2048,6 +2048,13 @@ static inline int security_inode_init_security(struct inode *inode,
 	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)