dtbs_check: ERROR: dtschema minimum version is v2021.2.1

From: kernel test robot
Date: Wed Mar 09 2022 - 00:29:17 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 330f4c53d3c2d8b11d86ec03a964b86dc81452f5
commit: e2b0d9987920f3dc727e08a1bf42296be9b5d6da dt-bindings: Bump dtschema version required to v2021.2.1
date: 12 months ago
config: arm-defconfig (https://download.01.org/0day-ci/archive/20220309/202203091300.8HScLbcF-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
reproduce: make ARCH=arm dtbs_check

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

sort: -:2: disorder: 0
>> ERROR: dtschema minimum version is v2021.2.1

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx