CPUInfoTest fails because "serialize" CPU feature is not known

Reported by Kosta Stojiljkovic <kostasto@proton.me>: https://mail.openjdk.org/pipermail/hotspot-compiler-dev/2023-March/063466.html

Support for this feature was added by JDK-8264543 which did update src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.amd64/src/jdk/vm/ci/amd64/AMD64.java but forgot this test.

WB.getCPUFeatures(): "(1 cores per cpu, 2 threads per core) family 6 model 143 stepping 0 microcode 0xf0, cx8, cmov, fxsr, ht, mmx, 3dnowpref, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, lzcnt, tsc, tscinvbit, avx, avx2, aes, erms, clmul, bmi1, bmi2, adx, avx512f, avx512dq, avx512cd, avx512bw, avx512vl, sha, fma, vzeroupper, avx512_vpopcntdq, avx512_vpclmulqdq, avx512_vaes, avx512_vnni, clflush, clflushopt, clwb, avx512_vbmi2, avx512_vbmi, serialize, rdtscp, rdpid, fsrm, gfni, avx512_bitalg, f16c, pku, ospke, cet_ibt, cet_ss, avx512_ifma"
CPUInfo.getAdditionalCPUInfo(): "(1 cores per cpu, 2 threads per core) family 6 model 143 stepping 0 microcode 0xf0"
CPUInfo.getFeatures(): [cx8, cmov, fxsr, ht, mmx, 3dnowpref, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, lzcnt, tsc, tscinvbit, avx, avx2, aes, erms, clmul, bmi1, bmi2, adx, avx512f, avx512dq, avx512cd, avx512bw, avx512vl, sha, fma, vzeroupper, avx512_vpopcntdq, avx512_vpclmulqdq, avx512_vaes, avx512_vnni, clflush, clflushopt, clwb, avx512_vbmi2, avx512_vbmi, serialize, rdtscp, rdpid, fsrm, gfni, avx512_bitalg, f16c, pku, ospke, cet_ibt, cet_ss, avx512_ifma]
Well-known CPU features: [avx512_ifma, avx512vl, avx512_vpopcntdq, fsrm, sse4.1, sse4.2, tscinvbit, gfni, cx8, rdtscp, bmi1, bmi2, cmov, vzeroupper, f16c, ht, hv, tscinv, avx512_vaes, avx512_vnni, avx512dq, avx512_vbmi2, avx512_bitalg, rdpid, ssse3, cet_ibt, avx512pf, fma, clmul, avx512f, popcnt, avx512er, avx, mmx, avx512_vbmi, clflush, sse4a, erms, sse, sse2, sse3, 3dnowpref, adx, sha, lzcnt, rtm, fxsr, avx512bw, clflushopt, cet_ss, clwb, pku, avx512cd, avx2, avx512_vpclmulqdq, ospke, aes, tsc]
STDERR:
java.lang.RuntimeException: not all features are known: expected true, was false
at jdk.test.lib.Asserts.fail(Asserts.java:594)
at jdk.test.lib.Asserts.assertTrue(Asserts.java:486)
at CPUInfoTest.main(CPUInfoTest.java:94)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:125)
at java.base/java.lang.Thread.run(Thread.java:1623)