[PATCH v9] AT91: Add a driver for the ADC

[Maxime Ripard]

Hi all,

The last version had a bug in the error handling of the probe function
of the adc driver, the free_irq call having the wrong dev_id. This
version corrects it.

Cc: Nicolas Ferre <nicolas.ferre at atmel.com>
Cc: Patrice Vilchez <patrice.vilchez at atmel.com>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>