Merge remote-tracking branch 'remotes/rth/tags/pull-axp-20190108' into staging

Queued target/alpha patches

# gpg: Signature made Tue 08 Jan 2019 02:14:18 GMT
# gpg:                using RSA key 64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-axp-20190108:
  pc-bios: Update palcode-clipper
  target/alpha: Fix user-only initialization of fpcr
  hw/alpha/typhoon: Stop calling cpu_unassigned_access()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>