Update USB shutdown callback for the 6.12 kernel. A sprintf
overlaps issue is also fixed in this patch. Unfortunately,
there are dozens of missing-prototypes warnings so it's hard
to fix them one by one. Let's just silence them.
Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
Link: https://github.com/openwrt/openwrt/pull/18637
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
