mvgbe: add support for orion5x GbE controller

Add definitions and initialization in orion5x for mvgbe.
Add orion5x in mvgbe SoC includes.

Signed-off-by: Albert Aribaud <albert.aribaud@free.fr>
Acked-by: Prafulla Wadaskar <prafulla@marvell.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/arch/arm/include/asm/arch-kirkwood/kirkwood.h b/arch/arm/include/asm/arch-kirkwood/kirkwood.h
index 5c2586b..9edb0be 100644
--- a/arch/arm/include/asm/arch-kirkwood/kirkwood.h
+++ b/arch/arm/include/asm/arch-kirkwood/kirkwood.h
@@ -60,8 +60,10 @@
 #define KW_EGIGA0_BASE			(KW_REGISTER(0x72000))
 #define KW_EGIGA1_BASE			(KW_REGISTER(0x76000))
 
-#define MVGBE0_BASE			KW_EGIGA0_BASE
-#define MVGBE1_BASE			KW_EGIGA1_BASE
+/* Kirkwood GbE controller has two ports */
+#define MAX_MVGBE_DEVS	2
+#define MVGBE0_BASE	KW_EGIGA0_BASE
+#define MVGBE1_BASE	KW_EGIGA1_BASE
 
 #if defined (CONFIG_KW88F6281)
 #include <asm/arch/kw88f6281.h>