Fixed board config

Signed-off-by: Christian Ege <k4230r6@gmail.com>
Alway enable NAND and E2 prog

E2 prog enables keyboard interrupt during boot this enables the possibility
to interrupt u-boot with a keypress on the keyboard of the PC instead on the
STB frontpanel.

Signed-off-by: Christian Ege <k4230r6@gmail.com>
Added prinout of particular board during boot-up

This code was adapted from libstbhal from neutrino-mp.

Signed-off-by: Christian Ege <k4230r6@gmail.com>