lttng-modules: update to v2.13.12

lttng-modules: update to v2.13.12

We drop our previously backported patches for v6.8 kernels as they are
part of the 2.13.12 release of lttng and we add backports for v6.9+
kernels.

Bumping lttng-modules to version v2.13.12-7-g52eb2ee9, which comprises the following commits:

    52eb2ee9 Fix: dev_base_lock removed in linux 6.9-rc1
    175fe77c Fix: mm_compaction_migratepages changed in linux 6.9-rc1
    303434ab Fix: ASoC add component to set_bias_level events in linux 6.9-rc1
    88c4e0fe Fix: ASoC snd_doc_dapm on linux 6.9-rc1
    578ab207 Fix: build kvm probe on EL 8.4+
    057ad399 Fix: support ext4_journal_start on EL 8.4+
    3ca21738 Fix: correct RHEL range for kmem_cache_free define
    4ba4f0ec Version 2.13.12
    1124749b docs: Add supported versions and fix-backport policy
    c302cf1d docs: Add links to project resources
    d6b75831 Fix: Correct minimum version in jbd2 SLE kernel range
    9e6736d6 Fix: Handle recent SLE major version codes
    5d331562 Fix: build on sles15sp4
    f6800492 Compile fixes for RHEL 9.3 kernels
    d988f04a Fix: ext4_discard_preallocations changed in linux 6.8.0-rc3
    616c60b9 Fix: btrfs_get_extent flags and compress_type changed in linux 6.8.0-rc1
    8d195927 Fix: btrfs_chunk tracepoints changed in linux 6.8.0-rc1
    7e8d89d1 Fix: strlcpy removed in linux 6.8.0-rc1
    f4c1678d Fix: timer_start changed in linux 6.8.0-rc1
    60a1e809 Fix: sched_stat_runtime changed in linux 6.8.0-rc1

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>