m68k: Mark functions only called from setup_arch() __init

Some functions that are only called (indirectly) from setup_arch() lack
__init annotations.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

diff --cc arch/m68k/amiga/config.c
Simple merge

diff --cc arch/m68k/apollo/config.c
Simple merge

diff --cc arch/m68k/bvme6000/config.c
Simple merge

diff --cc arch/m68k/emu/natfeat.c
Simple merge

diff --cc arch/m68k/kernel/setup_mm.c
Simple merge

diff --cc arch/m68k/mac/psc.c
Simple merge

diff --cc arch/m68k/mvme147/config.c
Simple merge

diff --cc arch/m68k/mvme16x/config.c
Simple merge

diff --cc arch/m68k/q40/config.c
Simple merge

diff --cc arch/m68k/sun3/dvma.c
Simple merge

diff --cc arch/m68k/sun3/mmu_emu.c
Simple merge

diff --cc arch/m68k/sun3/sun3dvma.c
Simple merge