Merge remote-tracking branch 'remotes/hdeller/tags/target-hppa-pull-request' into...

hppa power button support, graphics updates and firmware fixes

# gpg: Signature made Mon 07 Sep 2020 20:09:49 BST
# gpg:                using EDDSA key BCE9123E1AD29F07C049BBDEF712B510A23A0F5F
# gpg: Good signature from "Helge Deller <deller@gmx.de>" [unknown]
# gpg:                 aka "Helge Deller <deller@kernel.org>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 4544 8228 2CD9 10DB EF3D  25F8 3E5F 3D04 A7A2 4603
#      Subkey fingerprint: BCE9 123E 1AD2 9F07 C049  BBDE F712 B510 A23A 0F5F

* remotes/hdeller/tags/target-hppa-pull-request:
  hw/display/artist: Allow screen size up to 2048 lines
  hw/display/artist: Refactor x/y coordination extraction
  hw/display/artist: Verify artist screen resolution
  target/hppa: Fix boot with old Linux installation CDs
  hw/hppa: Add power button emulation
  hw/hppa: Tell SeaBIOS port address of fw_cfg
  hw/hppa: Change fw_cfg port address
  hw/hppa: Store boot device in fw_cfg section
  hw/hppa: Make number of TLB and BTLB entries configurable
  seabios-hppa: Update SeaBIOS to hppa-qemu-5.2-2 tag

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