T7749: Dehardcode x86_64 ARCH to build VPP libraries for accel-pp-ng

[sever-sever]

Change summary

Dehardcode x86_64 ARCH to build VPP libraries used for accel-ppp-ng
Allows building accel-ppp-ng dependencies for ARM
Backport only after merging accel-ppp-ng for circinus to avoid conflicts

vyos_bld@76f809ee20c4:/vyos/work/T7749/vyos-build/scripts/package-build/linux-kernel$ dpkg-architecture -qDEB_HOST_MULTIARCH
x86_64-linux-gnu

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Related Task(s)

• https://vyos.dev/T7749

Related PR(s)

Check

./build.py --packages linux-kernel accel-ppp-ng

vyos_bld@76f809ee20c4:/vyos/work/T7749/vyos-build/scripts/package-build/linux-kernel$ ls -l *.deb
-rw-r--r-- 1 vyos_bld vyos_bld    583424 Aug 23 12:34 accel-ppp-ng_f5764ea_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld    190140 Aug 23 12:34 libvppinfra_25.06.0-21~ga5eeb187f-dirty_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld    161084 Aug 23 12:34 libvppinfra-dev_25.06.0-21~ga5eeb187f-dirty_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld   8995728 Aug 23 12:17 linux-headers-6.6.100-vyos_6.6.100-1_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld  29582808 Aug 23 12:17 linux-image-6.6.100-vyos_6.6.100-1_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld   1319320 Aug 23 12:17 linux-libc-dev_6.6.100-1_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld   2481688 Aug 23 12:17 linux-perf-6.6.100-vyos_6.6.100-1_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld     30172 Aug 23 12:34 python3-vpp-api_25.06.0-21~ga5eeb187f-dirty_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld   5319504 Aug 23 12:34 vpp_25.06.0-21~ga5eeb187f-dirty_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld   1192772 Aug 23 12:34 vpp-crypto-engines_25.06.0-21~ga5eeb187f-dirty_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld 104306476 Aug 23 12:34 vpp-dbg_25.06.0-21~ga5eeb187f-dirty_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld   1446608 Aug 23 12:34 vpp-dev_25.06.0-21~ga5eeb187f-dirty_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld   4673668 Aug 23 12:34 vpp-plugin-core_25.06.0-21~ga5eeb187f-dirty_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld    376612 Aug 23 12:34 vpp-plugin-devtools_25.06.0-21~ga5eeb187f-dirty_amd64.deb
-rw-r--r-- 1 vyos_bld vyos_bld   4797216 Aug 23 12:34 vpp-plugin-dpdk_25.06.0-21~ga5eeb187f-dirty_amd64.deb
vyos_bld@76f809ee20c4:/vyos/work/T7749/vyos-build/scripts/package-build/linux-kernel$ 

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

[github-actions]

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No issues in PR Title / Commit Title

[c-po]

Make build commands architecture independent