[ARM][AArch64] Add missing Arm CPU part-ids to enable -mcpu=native

[jthackray]

Update Host.cpp with some missing Arm CPU part identifiers,
to enable -mcpu=native on these processors. These are found in
the Technical Reference Manuals listed under "part num" or "part no"

[davemgreen]

This sounds good. Maybe they are not super helpful, but there are some tests in TEST(getLinuxHostCPUName, AArch64) if you wanted to check some of the ones that are more likely to run with -mcpu=native.

[davemgreen]

Actually I'm not sure it's very useful to compare numbers against themselves. Up to you whether you wanted to add them.

I checked this mostly against GCC from https://sourcegraph.com/github.com/gcc-mirror/gcc@ad860cc27b3312f9119c7fecb8638a7c1f6d77c9/-/blob/gcc/config/aarch64/aarch64-cores.def. The values LGTM.

[rgwott]

I commented here that it LGTM, but nevermind, it is already merged.