Hirsute update: upstream stable patchset 2021-12-16

SRU Justification

    Impact:
       The upstream process for stable tree updates is quite similar
       in scope to the Ubuntu SRU process, e.g., each patch has to
       demonstrably fix a bug, and each patch is vetted by upstream
       by originating either directly from a mainline/stable Linux tree or
       a minimally backported form of that patch. The following upstream
       stable patches should be included in the Ubuntu kernel:

       upstream stable patchset 2021-12-16

                Ported from the following upstream stable releases:
                        v5.10.81, v5.14.21, v5.15.4

       from git://git.kernel.org/

       Note: upstream stable v5.14 has now reached EOL, as of v5.14.21.

fortify: Explicitly disable Clang support
block: Add a helper to validate the block size
loop: Use blk_validate_block_size() to validate block size
bootconfig: init: Fix memblock leak in xbc_make_cmdline()
net: stmmac: add clocks management for gmac driver
net: stmmac: platform: fix build error with !CONFIG_PM_SLEEP
net: stmmac: fix missing unlock on error in stmmac_suspend()
net: stmmac: fix system hang if change mac address after interface ifdown
net: stmmac: fix issue where clk is being unprepared twice
net: stmmac: dwmac-rk: fix unbalanced pm_runtime_enable warnings
x86/iopl: Fake iopl(3) CLI/STI usage
parisc/entry: fix trace test in syscall exit path
PCI/MSI: Destroy sysfs before freeing entries
PCI/MSI: Deal with devices lying about their MSI mask capability
PCI: Add MSI masking quirk for Nvidia ION AHCI
erofs: remove the occupied parameter from z_erofs_pagevec_enqueue()
erofs: fix unsafe pagevec reuse of hooked pclusters
scripts/lld-version.sh: Rewrite based on upstream ld-version.sh
perf/core: Avoid put_page() when GUP fails
thermal: Fix NULL pointer dereferences in of_thermal_ functions
selftests/x86/iopl: Adjust to the faked iopl CLI/STI usage
Bluetooth: btusb: Add 0x0b05:0x190e Realtek 8761BU (ASUS BT500) device.
Bluetooth: btusb: Add support for TP-Link UB500 Adapter
string: uninline memcpy_and_pad
btrfs: introduce btrfs_is_data_reloc_root
btrfs: zoned: only allow one process to add pages to a relocation inode
UBUNTU: upstream stable to v5.10.81, v5.14.21, v5.15.4