[ARM] Orion: add RD88F5181L-GE support

This patch adds support for the Marvell Orion-VoIP RD2-88F5181L-GE
Reference Design, and enables use of the ethernet, USB, Cardbus and
mini-PCIe ports.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
diff --git a/arch/arm/mach-orion5x/Kconfig b/arch/arm/mach-orion5x/Kconfig
index 99b35b7..709e901 100644
--- a/arch/arm/mach-orion5x/Kconfig
+++ b/arch/arm/mach-orion5x/Kconfig
@@ -80,6 +80,12 @@
 	  Say 'Y' here if you want your kernel to support the
 	  Netgear WNR854T platform.
 
+config MACH_RD88F5181L_GE
+	bool "Marvell Orion-VoIP GE Reference Design"
+	help
+	  Say 'Y' here if you want your kernel to support the
+	  Marvell Orion-VoIP GE (88F5181L) RD.
+
 endmenu
 
 endif