bzt/raspi3-tutorial

réplica de https://github.com/bztsrc/raspi3-tutorial

Autor	SHA1 Mensaxe	Data
Oscar Shiang	c59ad439f4 Enable UART0 FIFOs	%!s(int64=3) %!d(string=hai) anos
bzt	8a80ab88b9 Clearified mbox call in uart per issue #49	%!s(int64=6) %!d(string=hai) anos
bzt	1b91dd9b3e Fixed a bug, made uart_getc() binary-safe	%!s(int64=6) %!d(string=hai) anos
bzt	a0b68d2db7 New tutorial, raspbootin for 64 bit	%!s(int64=6) %!d(string=hai) anos