ARM: mv78xx0: set the correct driver for the i2c RTC

Original code was largely copy-pasted from the reference board code, adjust to use the actual RTC chip present on the TS-WXL.
Signed-off-by: Jeremy J. Peper <jeremy@jeremypeper.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-mv78xx0/buffalo-wxl-setup.c

@@ -39,7 +39,7 @@ static struct mv_sata_platform_data db78x00_sata_data = {
 };
 
 static struct i2c_board_info __initdata db78x00_i2c_rtc = {
-	I2C_BOARD_INFO("ds1338", 0x68),
+	I2C_BOARD_INFO("rs5c372a", 0x32),
 };