Use vendor.api_level for kernel version requirements The vendor api level is what is used for VSR requirements. Test: atest vts_gki_compliance_test Bug: 326154405 (cherry picked from https://android-review.googlesource.com/q/commit:37d6a81b822ca605e23bc38627342c0976dfe244) Merged-In: If936de9f144ebdf6e90d4f36626192ffdfeb46af Change-Id: If936de9f144ebdf6e90d4f36626192ffdfeb46af