The relation between PIN_BANK numbers and pio letters wasn't made very
clear.
Signed-off-by: NRichard Genoud <richard.genoud@gmail.com>
Acked-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>