[coreboot] GPIO configuration in coreboot

[Rolf Evers-Fischer]

Dear Samuthria,
when you configure a pin as PAD_VAL_OUTPUT, it's input function will be 
disabled and you will read always 0. I assume that the hw-pin will toggle, 
if you measure it.

Please configure this pin as 'PAD_VAL_OUTPUT_ENABLE' instead of 
'PAD_VAL_OUTPUT', since this will let the input direction enabled and I 
expect you will get a proper result while reading the pin status.

Kind regards,
 Rolf