fix(driver): fixed build of old bpf probe against linux 6.15-rc1 [0.20.x cherry-pick]

[irozzo-1A]

What type of PR is this?

Uncomment one (or more) /kind <> lines:

/kind bug

/kind cleanup

/kind design

/kind documentation

/kind failing-test

/kind test

/kind feature

/kind sync

Any specific area of the project related to this PR?

Uncomment one (or more) /area <> lines:

/area API-version

/area build

/area CI

/area driver-kmod

/area driver-bpf

/area driver-modern-bpf

/area libscap-engine-bpf

/area libscap-engine-gvisor

/area libscap-engine-kmod

/area libscap-engine-modern-bpf

/area libscap-engine-nodriver

/area libscap-engine-noop

/area libscap-engine-source-plugin

/area libscap-engine-savefile

/area libscap

/area libpman

/area libsinsp

/area tests

/area proposals

Does this PR require a change in the driver versions?

/version driver-API-version-major

/version driver-API-version-minor

/version driver-API-version-patch

/version driver-SCHEMA-version-major

/version driver-SCHEMA-version-minor

/version driver-SCHEMA-version-patch

What this PR does / why we need it:

Cherry-pick #2341 into release 0.20.x

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[github-actions]

Please double check driver/SCHEMA_VERSION file. See versioning.

/hold

[poiana]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: irozzo-1A
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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (release/0.20.x@22be249). Learn more about missing BASE report.

Additional details and impacted files

@@                Coverage Diff                @@
##             release/0.20.x    #2713   +/-   ##
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  Coverage                  ?   74.40%           
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  Files                     ?      276           
  Lines                     ?    33274           
  Branches                  ?     5885           
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  Hits                      ?    24757           
  Misses                    ?     8517           
  Partials                  ?        0           

Flag	Coverage Δ
libsinsp	74.40% <ø> (?)

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