Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

Pull MIPS fixes from Ralf Baechle:
 "Another round of MIPS fixes for 4.15.

   - Maciej Rozycki found another series of FP issues which requires a
     seven part series to restructure and fix.

   - James fixes a warning about .set mt which gas doesn't like when
     building for R1 processors"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: Validate PR_SET_FP_MODE prctl(2) requests against the ABI of the task
  MIPS: Disallow outsized PTRACE_SETREGSET NT_PRFPREG regset accesses
  MIPS: Also verify sizeof `elf_fpreg_t' with PTRACE_SETREGSET
  MIPS: Fix an FCSR access API regression with NT_PRFPREG and MSA
  MIPS: Consistently handle buffer counter with PTRACE_SETREGSET
  MIPS: Guard against any partial write attempt with PTRACE_SETREGSET
  MIPS: Factor out NT_PRFPREG regset access helpers
  MIPS: CPS: Fix r1 .set mt assembler warning