[Bug 270888] graphics/gpu-firmware-intel-kmod freezes system on load

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270888

            Bug ID: 270888
           Summary: graphics/gpu-firmware-intel-kmod freezes system on
                    load
           Product: Ports & Packages
           Version: Latest
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: x11@FreeBSD.org
          Reporter: rkoberman@gmail.com
             Flags: maintainer-feedback?(x11@FreeBSD.org)
          Assignee: x11@FreeBSD.org

When attempting to load GPU firmware, the system wedges. It does not respond to
pings and no log entries are found. Running without firmware with limited
functionality: no DRI or VA-API capability.

Running drm-515-kmod-5.15.25_2 and get the following when booting without the
firmware installed:
drmn0: [drm] failed to retrieve link info, disabling eDP
drmn0: could not load firmware image 'i915/adlp_guc_62.0.3.bin'
drmn0: [drm] GuC firmware i915/adlp_guc_62.0.3.bin: fetch failed with error -2
drmn drmn0: drm_WARN_ON(intel_dp->pps.vdd_wakeref)
Apr 13 15:38:35 ptavv kernel: drmn drmn0:
drm_WARN_ON(intel_dp->pps.vdd_wakeref)
sysctl_warn_reuse: can't re-use a leaf (hw.dri.debug)!

FreeBSD 14.0-CURRENT #10 main-n261962-41236539d8dd-dirty: Sun Apr  9 14:17:50 
PDT 2023
"dirty" is the result of running a patched acpi-thermal.

CPU: 12th Gen Intel(R) Core(TM) i5-1235U (2496.00-MHz K8-class CPU)
  Origin="GenuineIntel"  Id=0x906a4  Family=0x6  Model=0x9a  Stepping=4

vgapci0@pci0:0:2:0:     class=0x030000 rev=0x0c hdr=0x00 vendor=0x8086
device=0x46a8 subvendor=0x17aa subdevice=0x22e8
    vendor     = 'Intel Corporation'
    device     = 'Alder Lake-UP3 GT2 [Iris Xe Graphics]'
    class      = display
    subclass   = VGA

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