Makefile, sam-ba: add support for 64 bits to *nix script.
Makefile, sam-ba: add support for 64 bits to *nix script.

Make the SAM-BA *nix script independant from build/host architecture.

Signed-off-by: Gaël PORTAY <1666f60cfa201a60b0ea694168a0b6932673170a@gmail.com>

gazoo74/at91nandflash