m68k: zorro7xx needs <asm/amigahw.h> if !CONFIG_AMIGA_PCMCIA

Reported by Ingo Juergensmann <ij@2007.bluespice.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>