Add GPIO PUSH button stuff to sipv2 board conf
sipv2 is seen by barebox as module saes,sipv2. board.c file probes sipv2 module and set direction and status of the the following gpio:
- PUSHB_LED (PA13)[out]{hi}: turn on/off led of the button
- HOLD_ON_PIN (PB10)[out]{hi}: hooks up and keeps on regulator
- PUSHB_IN (PB8)[in}: sense of the regulator.
Signed-off-by: Giandomenico Rossi rossi@amelchem.com