IAR:Fix version detection for xlinkavr
- Minor fix for the minimum version (V8+) where
xlinkavrbecame available. The oldVERSION_GREATER 7comparison was also encompassing V7.30.5, which uses the oldxlink.
xlinkavr became available.
The old VERSION_GREATER 7 comparison was also encompassing V7.30.5, which uses the old xlink.