[PATCH 0/7] x86: Address various objtool complaints

Hi!

A few objtool fixes that I mean to include in a late pull.

• [PATCH 1/7] x86/entry: Anchor annotation
• [PATCH 2/7] objtool: Extend UNWIND_HINT based ENDBR rules
• [PATCH 3/7] objtool: Mark __ubsan_handle_builtin_unreachable() as noreturn
• [PATCH 4/7] x86/cpu: Elide KCSAN for cpu_has() and friends
• [PATCH 5/7] jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds
• [PATCH 6/7] x86: Always inline on_thread_stack() and current_top_of_stack()
• [PATCH 7/7] context_tracking: Always inline empty stubs