Davinci: gpio - controller type support

This patch allows for gpio controllers that deviate from those found on
traditional davinci socs.  davinci_soc_info has an added field to indicate the
soc-specific gpio controller type.  The gpio initialization code then bails
out if necessary.

More elements (tnetv107x) to be added later into enum davinci_gpio_type.

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Tested-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c
index 5efce70..f9a54ff 100644
--- a/arch/arm/mach-davinci/dm355.c
+++ b/arch/arm/mach-davinci/dm355.c
@@ -859,6 +859,7 @@
 	.intc_irq_prios		= dm355_default_priorities,
 	.intc_irq_num		= DAVINCI_N_AINTC_IRQ,
 	.timer_info		= &dm355_timer_info,
+	.gpio_type		= GPIO_TYPE_DAVINCI,
 	.gpio_base		= IO_ADDRESS(DAVINCI_GPIO_BASE),
 	.gpio_num		= 104,
 	.gpio_irq		= IRQ_DM355_GPIOBNK0,