Linux 5.15.15

Link: https://lore.kernel.org/r/20220114081545.158363487@linuxfoundation.org
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Ron Economos <re@w6rz.net>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Fox Chen <foxhlchen@gmail.com>
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
Tested-by: Salvatore Bonaccorso <carnil@debian.org>
Tested-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Tested-by: Andrei Rabusov
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Jeffrin Jose T <jeffrin@rajagiritech.edu.in>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Makefile

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 5
 PATCHLEVEL = 15
-SUBLEVEL = 14
+SUBLEVEL = 15
 EXTRAVERSION =
 NAME = Trick or Treat