merge-upstream/v5.4.79 from branch/tag: upstream/v5.4.79 into branch: cos-5.4

Changelog:
-------------------------------------------------------------

Christophe Leroy (1):
      powerpc/8xx: Always fault when _PAGE_ACCESSED is not set

Daniel Axtens (1):
      selftests/powerpc: entry flush test

David Edmondson (1):
      KVM: x86: clflushopt should be treated as a no-op by emulation

Dmitry Torokhov (1):
      Input: sunkbd - avoid use-after-free in teardown paths

Eran Ben Elisha (3):
      net/mlx5: poll cmd EQ in case of command timeout
      net/mlx5: Fix a race when moving command interface to events mode
      net/mlx5: Add retry mechanism to the command entry index allocation

Greg Kroah-Hartman (1):
      Linux 5.4.79

Hauke Mehrtens (1):
      net: lantiq: Add locking for TX DMA channel

Johannes Berg (1):
      mac80211: always wind down STA state

Michael Ellerman (1):
      powerpc: Only include kup-radix.h for 64-bit Book3S

Nicholas Piggin (2):
      powerpc/64s: flush L1D on kernel entry
      powerpc/64s: flush L1D after user accesses

Nick Desaulniers (1):
      ACPI: GED: fix -Wformat

Parav Pandit (1):
      net/mlx5: Use async EQ setup cleanup helpers for multiple EQs

Russell Currey (1):
      selftests/powerpc: rfi_flush: disable entry flush if present

Sudip Mukherjee (1):
      MIPS: PCI: Fix MIPS build

Zhang Changzhong (1):
      can: proc: can_remove_proc(): silence remove_proc_entry warning

BUG=b/174028591
TEST=tryjob, validation and K8s e2e
RELEASE_NOTE=Updated the Linux kernel to upstream/v5.4.79.

Signed-off-by: COS Kernel Merge Bot <cloud-image-merge-automation@prod.google.com>
Change-Id: Iea2fa8ca3dbc94fe474b0fc4c8d99c213665e5f6