Fix the following build error found when building imx_v4_v5_defconfig:

  CC      arch/arm/mach-imx/mach-imx27ipcam.o
In file included from arch/arm/plat-mxc/include/mach/iomux-mx27.h:23,
                 from arch/arm/mach-imx/mach-imx27ipcam.c:22:
arch/arm/plat-mxc/include/mach/iomux-v1.h:99: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'imx_iomuxv1_init'
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

There are several occurences where MXC_INTERNAL_IRQ is
assumed to be the start of the gpio interrupts. It was never
meant this way. Replace these with gpio_to_irq.
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>
Acked-by: NFabio Estevam <fabio.estevam@freescale.com>

When setting the IOMUX of multiple pins via mxc_gpio_setup_multiple_pins, gpio_request
is called and this prevents subsequent calls of gpio_request done by drivers to succeed.

Remove gpio_request call from mxc_gpio_setup_multiple_pins function.

As gpio_request is removed from mxc_gpio_setup_multiple_pins, there is no need to have
mxc_gpio_release_multiple_pins anymore, so remove this function.

Tested on a mx27_3ds board and after applying this patch it is possible to define all the
IOMUX setup in a static array
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

This saves us from soc level dispatching in generic files
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

mxc_gpio_mode checks for invalid pins and so it returns zero for
success, -EINVAL for invalid pins.

While at it, remove definitions of GPIO_PORT_MAX removed as they are
unused now.
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>

Addionally make iomux-mx*.h headers stand-alone and similar to iomux-v3
platform files should include their platform iomux header from now on.
For now iomux.h simply includes all iomux-v1 platform headers and so
provides compatibility until all files are converted.
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>