The linux kernel's checkpatch.pl script does several checks
and fixits on the log functions. This clang-tidy checker repeats
these checks so the fixits can be applied tree wide.
The first fixer looks for unneeded 'h' in format strings.
From this reproducer
checkpatch.pl produces this warning
and this fix
- printk("%hx\n", a);
+ printk("%x\n", a);