brcm2708: force uart as the default console for procd and remove nonexistent console

procd gets last console from cmdline, so swapping tty1 (framebuffer) and ttyAMA0 (uart) is enough to force procd output via uart

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

SVN-Revision: 44448