[ARM] Orion: MV88F5181 support bits

add MV88F5181 support bits required by D-link DNS-323 patch

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Acked-by: Tzachi Perelstein <tzachi@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-orion/common.c b/arch/arm/mach-orion/common.c
index 12736fd..ff34827 100644
--- a/arch/arm/mach-orion/common.c
+++ b/arch/arm/mach-orion/common.c
@@ -237,6 +237,12 @@
 		} else {
 			*dev_name = "MV88F5182-Rev-Unsupported";
 		}
+	} else if (*dev == MV88F5181_DEV_ID) {
+		if (*rev == MV88F5181_REV_B1) {
+			*dev_name = "MV88F5181-Rev-B1";
+		} else {
+			*dev_name = "MV88F5181-Rev-Unsupported";
+		}
 	} else {
 		*dev_name = "Device-Unknown";
 	}