Use __posix_acl_create/_chmod and add backwards compatibility

There are new interfaces available but the old one has been retained
for us to use. In case of older kernels, we will need to fall back
to the previous name of these functions.

Signed-off-by: Auke Kok <auke.kok@versity.com>

kmod/src/kernelcompat.h

@@ -108,4 +108,9 @@ static inline int dir_emit_dots(struct file *file, void *dirent,
 #define setattr_prepare(dentry, attr) inode_change_ok(d_inode(dentry), attr)
 #endif
 
+#ifndef KC___POSIX_ACL_CREATE
+#define __posix_acl_create posix_acl_create
+#define __posix_acl_chmod posix_acl_chmod
+#endif
+
 #endif