CLSA-2023-1695046627 Fix of 7 CVEs

Bionic update: upstream stable patchset 2022-12-01 LP: 1998542 // CVE-2022-26373 - x86/speculation: Add RSB VM Exit protections Bionic update: upstream stable patchset 2022-12-01 LP: 1998542 - Revert "x86/cpu: Add a steppings field to struct x86cpuid" - x86/cpufeature: Add facility to check for m...