Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

The i.MX31 PDK consists of several boards, one of them is a debug
board containing a CPLD which controls some debug leds, switch
buttons, an interrupt chip and an Ethernet controller.
This patch adds support for detecting if the PDK board is present
(during boot) and adds the interrupt chip to the kernel.
Signed-off-by: NMagnus Lilja <lilja.magnus@gmail.com>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Several comments in board config files stated "mandatory for
CONFIG_LL_DEBUG" but the correct name is CONFIG_DEBUG_LL.
Signed-off-by: NMagnus Lilja <lilja.magnus@gmail.com>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Add basic support to the MX31PDK development board, also known
as MX31 3DS or MX31 3-stack board (http://www.freescale.com/imx31pdk).
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Nsascha Hauer <s.hauer@pengutronix.de>