socz80 port for the de0 (not nano) board

Sergio L. Pascual e35013a1af Initial de0 nano support 9 lat temu
vhdl e35013a1af Initial de0 nano support 9 lat temu
Makefile e35013a1af Initial de0 nano support 9 lat temu
de0_nano.tcl e35013a1af Initial de0 nano support 9 lat temu