Merge remote-tracking branch 'remotes/vivier-m68k/tags/m68k-next-pull-request' into staging

Pull request q800 20211008

macfb: fixes for booting MacOS

# gpg: Signature made Fri 08 Oct 2021 04:44:44 AM PDT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]

* remotes/vivier-m68k/tags/m68k-next-pull-request:
  q800: wire macfb IRQ to separate video interrupt on VIA2
  macfb: add vertical blank interrupt
  macfb: fix 24-bit RGB pixel encoding
  macfb: fix up 1-bit pixel encoding
  macfb: add common monitor modes supported by the MacOS toolbox ROM
  macfb: add qdev property to specify display type
  macfb: implement mode sense to allow display type to be detected
  macfb: add trace events for reading and writing the control registers
  macfb: use memory_region_init_ram() in macfb_common_realize() for the framebuffer
  macfb: fix overflow of color_palette array
  macfb: fix invalid object reference in macfb_common_realize()
  macfb: update macfb.c to use the Error API best practices
  macfb: handle errors that occur during realize

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>