ARM: imx: get rid of mxc_gpio_init

This function is defined once for each imx family and so is in the way
when compiling a kernel for more than one SoC.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
diff --git a/arch/arm/mach-mx1/generic.c b/arch/arm/mach-mx1/generic.c
index 5a745d9..a9be5f1 100644
--- a/arch/arm/mach-mx1/generic.c
+++ b/arch/arm/mach-mx1/generic.c
@@ -46,7 +46,10 @@
 	iotable_init(imx_io_desc, ARRAY_SIZE(imx_io_desc));
 }
 
+int imx1_register_gpios(void);
+
 void __init mx1_init_irq(void)
 {
+	imx1_register_gpios();
 	mxc_init_irq(MX1_IO_ADDRESS(MX1_AVIC_BASE_ADDR));
 }