Defines starting with `v' in src/od-amiga

• vhposr src/od-amiga/amiga-kludges.h:104
• vhposw src/od-amiga/amiga-kludges.h:105
• vposr src/od-amiga/amiga-kludges.h:106
• vposw src/od-amiga/amiga-kludges.h:107