Add i2c_board_info for RiscPC PCF8583

Add the necessary i2c_board_info structure to fix the lack of PCF8583
RTC on RiscPC.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
diff --git a/arch/arm/mach-rpc/riscpc.c b/arch/arm/mach-rpc/riscpc.c
index e88d417..c7fc01e 100644
--- a/arch/arm/mach-rpc/riscpc.c
+++ b/arch/arm/mach-rpc/riscpc.c
@@ -19,6 +19,7 @@
 #include <linux/serial_8250.h>
 #include <linux/ata_platform.h>
 #include <linux/io.h>
+#include <linux/i2c.h>
 
 #include <asm/elf.h>
 #include <asm/mach-types.h>
@@ -201,8 +202,13 @@
 	&pata_device,
 };
 
+static struct i2c_board_info i2c_rtc = {
+	I2C_BOARD_INFO("pcf8583", 0x50)
+};
+
 static int __init rpc_init(void)
 {
+	i2c_register_board_info(0, &i2c_rtc, 1);
 	return platform_add_devices(devs, ARRAY_SIZE(devs));
 }