Merge tag 'sh-for-5.8-part2' of git://git.libc.org/linux-sh into master

Pull arch/sh fixes from Rich Felker:
 "Two last-minute fixes: one is for a boot regression (mmu code broken)
  and the other fixes a long-standing broken syscall number bounds
  check"

* tag 'sh-for-5.8-part2' of git://git.libc.org/linux-sh:
  sh: Fix validation of system call number
  sh/tlb: Fix PGTABLE_LEVELS > 2