Provide uncompressed arm64 kernel images

[Juerg Haefliger]

[Impact]

We want to eventually get rid of u-boot on pi which means that the pi firmware will load the kernel but it can only handle uncompressed arm64 kernels.

[Test Case]

N/A.

[Regression Potential]

The kernel image gets bigger and users might run out of space on the VFAT partition.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-raspi - 5.8.0-1002.5

---------------
linux-raspi (5.8.0-1002.5) groovy; urgency=medium

  * groovy/linux-raspi: 5.8.0-1002.5 -proposed tracker (LP: #1894068)

  * Packaging resync (LP: #1786013)
    - [Packaging] update update.conf

  * Miscellaneous Ubuntu changes
    - [Config] raspi: updateconfigs after rebase to Ubuntu-5.8.0-18.19
    - [Packaging] raspi: Add bootstrap PPA for getabis

  [ Ubuntu: 5.8.0-18.19 ]

  * groovy/linux: 5.8.0-18.19 -proposed tracker (LP: #1893047)
  * Packaging resync (LP: #1786013)
    - update dkms package versions
  * Groovy update: v5.8.4 upstream stable release (LP: #1893048)
    - drm/vgem: Replace opencoded version of drm_gem_dumb_map_offset()
    - drm/panel-simple: Fix inverted V/H SYNC for Frida FRD350H54004 panel
    - drm/ast: Remove unused code paths for AST 1180
    - drm/ast: Initialize DRAM type before posting GPU
    - khugepaged: adjust VM_BUG_ON_MM() in __khugepaged_enter()
    - ALSA: hda: avoid reset of sdo_limit
    - ALSA: hda/realtek: Add quirk for Samsung Galaxy Flex Book
    - ALSA: hda/realtek: Add quirk for Samsung Galaxy Book Ion
    - can: j1939: transport: j1939_session_tx_dat(): fix use-after-free read in
      j1939_tp_txtimer()
    - can: j1939: socket: j1939_sk_bind(): make sure ml_priv is allocated
    - spi: Prevent adding devices below an unregistering controller
    - io_uring: find and cancel head link async work on files exit
    - mm/vunmap: add cond_resched() in vunmap_pmd_range
    - romfs: fix uninitialized memory leak in romfs_dev_read()
    - kernel/relay.c: fix memleak on destroy relay channel
    - uprobes: __replace_page() avoid BUG in munlock_vma_page()
    - squashfs: avoid bio_alloc() failure with 1Mbyte blocks
    - mm: include CMA pages in lowmem_reserve at boot
    - mm, page_alloc: fix core hung in free_pcppages_bulk()
    - ASoC: amd: renoir: restore two more registers during resume
    - RDMA/hfi1: Correct an interlock issue for TID RDMA WRITE request
    - opp: Enable resources again if they were disabled earlier
    - opp: Put opp table in dev_pm_opp_set_rate() for empty tables
    - opp: Put opp table in dev_pm_opp_set_rate() if _set_opp_bw() fails
    - ext4: do not block RWF_NOWAIT dio write on unallocated space
    - ext4: fix checking of directory entry validity for inline directories
    - jbd2: add the missing unlock_buffer() in the error path of
      jbd2_write_superblock()
    - scsi: zfcp: Fix use-after-free in request timeout handlers
    - selftests: kvm: Use a shorter encoding to clear RAX
    - s390/pci: fix zpci_bus_link_virtfn()
    - s390/pci: re-introduce zpci_remove_device()
    - s390/pci: fix PF/VF linking on hot plug
    - s390/pci: ignore stale configuration request event
    - mm/memory.c: skip spurious TLB flush for retried page fault
    - drm: amdgpu: Use the correct size when allocating memory
    - drm/amdgpu/display: use GFP_ATOMIC in dcn20_validate_bandwidth_internal
    - drm/amd/display: Fix incorrect backlight register offset for DCN
    - drm/amd/display: Fix EDID parsing after resume from suspend
    - drm/amd/display: Blank stream before destroying HDCP session
    - drm/amd...