zephyr: tests: userspace: add test for cache ops via syscalls (depends on PR10119)#10259

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kv2019i wants to merge 6 commits intothesofproject:mainfrom

kv2019i:202509-audio-usercache-ztest

Commits on Sep 24, 2025

--break-- below is PR10119 tip, needs to be merged first
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Commits on Sep 30, 2025

zephyr: tests: userspace: add test for cache ops via syscalls
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