- Allocate 64MB of graphics memory by default instead of maximum possible
in order to leave more general memory free (can be changed with GMA_mem
boot parameter).
- Get GATT size from GATT-control register for later chips (as BAR always
gives 2MB).
- Map MMIO and GATT regions separately, even when they share a BAR (allows
use of generation-independent code).
- Renamed BAR variables because BAR numbers vary between chip generations.
git-svn-id: https://svn.aros.org/svn/aros/trunk/AROS@37413 fb15a70f-31f2-0310-bbcc-cdcc74a49acc