Fix GPIO and remove unused ones from Romulus.py

1. Remove unused GPIO configs;
2. Add comments of GPIO names in schematic for CRONUS_SEL,
   POWER_BUTTON, RESET_BUTTON;
3. Fix the GPIO configs for BMC_THROTTLE, IDBTN;

The GPIO names are hard-coded for now and some of them conflict with P8.
A future task will abstract the GPIO names so we can use names in schematic.
Once the task is done, this file will be updated to use GPIO names in
schematic.

Change-Id: Id14b64c2546ae0538bb5a04c535f310f6933c97b
Signed-off-by: Lei YU <mine260309@gmail.com>
1 file changed