aarch64: add HWCAP2_ macros from linux v5.3
these were missed before, added in
linux commit 1201937491822b61641c1878ebcd16a93aed4540
arm64: Expose ARMv8.5 CondM capability to userspace
linux commit ca9503fc9e9812aa6258e55d44edb03eb30fc46f
arm64: Expose FRINT capabilities to userspace