toplevel: support for new CSR width API
Use Wishbone as main bus and rewrite GPMC bridge
GPMC: hack to debug read/write decoding
Support multiple bus masters and address requests
Revert "GPMC: hack to debug read/write decoding"

This reverts commit 917df2f310cd0ae3b9397099f98549d5c282bf1b.
Merge Wishbone