[ARM] Orion: add the option to support different ehci phy initialization

The Orion ehci driver serves the Orion, kirkwood and DD Soc families.
Since each of those integrate a different USB phy we should have the
ability to use few initialization sequences or to leave the boot loader
phy settings as is.

Signed-off-by: Ronen Shitrit <rshitrit@marvell.com>
diff --git a/arch/arm/mach-mv78xx0/common.c b/arch/arm/mach-mv78xx0/common.c
index 238a2f8..b0e4e0d 100644
--- a/arch/arm/mach-mv78xx0/common.c
+++ b/arch/arm/mach-mv78xx0/common.c
@@ -167,6 +167,7 @@
  ****************************************************************************/
 static struct orion_ehci_data mv78xx0_ehci_data = {
 	.dram		= &mv78xx0_mbus_dram_info,
+	.phy_version	= EHCI_PHY_NA,
 };
 
 static u64 ehci_dmamask = 0xffffffffUL;