Memory Options - Link errors

[rosimildo]

Some files are missing, or lack instructions where they're found.
If you select ION or SUNXI_MEM options, the build fails.

There should be instructions where the libraries required when these options are selected come from.

The kernel driver does not work with "VE" memory ( default option ). There is a comment in the driver to return "0" memory when called.

[jernejsk]

AFAIK, only ION works. Definetely some files are missing. You can find them in older commits, for example at 8c6e14c