Conflicts:
	common/cp210x_gpio.py
	common/find_usb_tty.py

calibr_box.py is board specific (the type of box differ depending on the board).
Therefore it is removed from the common pts. If a mean to differentiate between
the box if implemented, it might come back to common pts.

cp210x driver is removed, because it is now stored in the usb-relay-box1 project's repo.

cp210x_eeprom.py is removed, because it is specific to the board (e.g. not the same for fmc-adc)

The new class is inherited from the VME class from vv_lib (svec pts)
and it implements iread and iwrite methods needed by rr based tests.

Add a function to read gn4124 interrupt configuration.

- Returns all registers.
- Two dimensions table [address, data]

This is the tool used to fill the FMC EEPROM with IPMI and calibration data.

Always print register value, even if it contains fields.

Forgot to remove legacy argument, not useful anymore.

 - get/set register
 - get/set field in register
 - print register map

Call to irqena.

Note: The driver is disabling the interrupts in the ISR.
      Therefore, the user have to explicitly enable interrupts again.

Exception from lower level modules (i2c, spi, onewire, etc...) are forwarded
to the upper layer by the device modules (ds18b20, ltc217x, etc...).
Each layer is adding specific informations to the error message (e.g.
wishbone core base address, spi slave number or i2c address, etc...).
This will simplify the exception handling in the higher level modules.

Comments review.

Adding exception class, comments, etc...

-> more generic function name.

Exception based error handeling.