[ARM] 4901/3: mainstone: Register primary I2C bus

Mainstone has the primary I2C bus exposed for use on plugin modules.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-pxa/mainstone.c

@@ -46,6 +46,7 @@
 #include <asm/arch/mainstone.h>
 #include <asm/arch/audio.h>
 #include <asm/arch/pxafb.h>
+#include <asm/arch/i2c.h>
 #include <asm/arch/mmc.h>
 #include <asm/arch/irda.h>
 #include <asm/arch/ohci.h>
@@ -637,6 +638,7 @@ static void __init mainstone_init(void)
 	pxa_set_mci_info(&mainstone_mci_platform_data);
 	pxa_set_ficp_info(&mainstone_ficp_platform_data);
 	pxa_set_ohci_info(&mainstone_ohci_platform_data);
+	pxa_set_i2c_info(NULL);
 
 	mainstone_init_keypad();
 }