The EMI pins are documented in the reference manual as using value 0 for both
1.8V and 2.5V. Value 1 is reserved.

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX23 and i.MX28 iomux mode definitions differ for no good reason.

Compared to the two previous definitions this introduces a few flags
that are not used yet but this changes in the next commit to detect
broken definitions.

Apart from different constants this commit intends to be a no-op. If
there are changes in the register values there is either a bug in this
patch or the used mode is broken (e.g. a pullup value is defined for a
pin that has a bitkeeper).

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Juergen Borleis <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mach/gpio.h is for the gpio API, so move unrelated stuff
away.

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