[Kernel/FB] ScreenPad display static on FB initialization

[Qonfused]

Follow up to https://github.com/shiecldk/ASUS-ZenBook-Pro-Duo-15-OLED-UX582-Hackintosh/issues/2 investigating scrambled screenpad plus display-out.

Current tasks:

• [ ] Display output
• Pre-OS (OpenCore verbose)
  • [x] GOP (UEFI feature)
• iGPU Framebuffer
  • [x] Proper RGB screenspace
  • [x] QE/CI acceleration
• [ ] Display metadata (EDID)
  • [x] Device Name (Cosmetic)
  • [x] Device and Vendor IDs
  • [ ] Valid resolution data
    • [x] Native resolution
    • [x] Default resolution
    • [ ] Scaled resolutions
  • [ ] Valid clock/timings data
  • [ ] Physical size info (Cosmetic)
    • [ ] Panel dimensions
    • [ ] Correct default ppmm
• [x] PCH Sideband signals
  • [x] Display Hotplug
  • [x] Panel power and backlight
  • [x] GMBUS I2C GPIO