aufs: 5.15.5-20220117 ---> 5.15.5-20220221

Corresponds to:

commit 6f292fea7136cec1752935170e44b78e0fa53ea7 (HEAD)
Author: J. R. Okajima <hooanon05g@gmail.com>
Date:   Sun Feb 20 09:43:26 2022 +0900

    5.15.5 20220221

in https://github.com/sfjro/aufs5-standalone.git

which via "git log --oneline --no-merges aufs5.15.5" encapsulates:

6f292fea7136 5.15.5 20220221
ac38cd415fb9 aufs: tiny, headers after fs_context
8aa55258925f aufs: fs_context 7/7, finally remount
3450ca9346c0 aufs: fs_context 6/7, now mount
e734244bd54a aufs: fs_context 5/7, parse all other mount options
3c9e9e3b9102 aufs: fs_context 4/7, parse xino options
5dc9a7c80362 aufs: fs_context 3/7, parse the branch-management options
4fdd4d389330 aufs: fs_context 2/7, parse "br" mount option
7f235dcdee2a aufs: fs_context 1/7, skelton of the new shceme
b8aa569c2ea5 aufs: pre fs_context, convert a static flag to a macro
4a19e0b7642f aufs: pre fs_context, support the incomplete sb and sbinfo case
3792c81561c7 aufs: pre fs_context, convert the type of alloc_sbinfo()
17dd5444ac51 5.15.5 20220117

Note that the series of 3+7+1 commits have been applied individually
prior to this version bump commit.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>