MemMap: Added AXI_WRAM & SHARED_PAGE along with other stuff
Got rid of I/O address's since the I/O addresses range's overlap with other
address's types such as vram, these I/O addresses need to be done in an different
way.
Merge pull request #253 from purpasmart96/mem_map

MemMap: Removed I/O address's and added more stuff