The model introduced in patch 1 is now arch-agnostic, and all arch-es
are being switched at least partly (to at least give examples of how
things will look like); PPC and RISC-V are still small enough to switch
completely in one go.

1: common: assembly entry point type/size annotations
2: x86: annotate entry points with type and size
3: x86: also mark assembler globals hidden
4: Arm: annotate entry points with type and size
5: RISC-V: annotate entry points with type and size
6: PPC: switch entry point annotations to common model
7: tools/binfile: switch to common annotations model
8: common: honor CONFIG_CC_SPLIT_SECTIONS also for assembly functions

Jan