Fix indentation

Replace inconsistent tabs with spaces

Signed-off-by: Paul Brook <paul@nowt.org>
Build prussdrv into module

Include prussrdv.c intpo python module instead of shipping/linking against
shared library.

Signed-off-by: Paul Brook <paul@nowt.org>
Implement map_prumem

Add map_prumem function, and symbolic constants for memory regions.

Signed-off-by: Paul Brook <paul@nowt.org>