[ARM] Orion: correctly load mv2120 RTC driver

After Jean Delvare's change "i2c: Convert most new-style drivers
to use module aliasing" (3760f736716f74bdc62a4ba5406934338da93eb2),
loading rtc-xxx from platform code fails.  Update mv2120-setup.c so
that the driver is loaded correctly.

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
diff --git a/arch/arm/mach-orion5x/mv2120-setup.c b/arch/arm/mach-orion5x/mv2120-setup.c
index d838bdb..f1dcad3 100644
--- a/arch/arm/mach-orion5x/mv2120-setup.c
+++ b/arch/arm/mach-orion5x/mv2120-setup.c
@@ -133,7 +133,7 @@
 };
 
 static struct i2c_board_info __initdata mv2120_i2c_rtc = {
-	I2C_BOARD_INFO("rtc-pcf8563", 0x51),
+	I2C_BOARD_INFO("pcf8563", 0x51),
 	.irq	= 0,
 };