[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>

arch/arm/mach-kirkwood/common.c

@@ -57,6 +57,7 @@ void __init kirkwood_map_io(void)
  ****************************************************************************/
 static struct orion_ehci_data kirkwood_ehci_data = {
 	.dram		= &kirkwood_mbus_dram_info,
+	.phy_version	= EHCI_PHY_NA,
 };
 
 static u64 ehci_dmamask = 0xffffffffUL;

arch/arm/mach-mv78xx0/common.c

@@ -167,6 +167,7 @@ void __init mv78xx0_map_io(void)
  ****************************************************************************/
 static struct orion_ehci_data mv78xx0_ehci_data = {
 	.dram		= &mv78xx0_mbus_dram_info,
+	.phy_version	= EHCI_PHY_NA,
 };
 
 static u64 ehci_dmamask = 0xffffffffUL;

arch/arm/mach-orion5x/common.c

@@ -72,6 +72,7 @@ void __init orion5x_map_io(void)
  ****************************************************************************/
 static struct orion_ehci_data orion5x_ehci_data = {
 	.dram		= &orion5x_mbus_dram_info,
+	.phy_version	= EHCI_PHY_ORION,
 };
 
 static u64 ehci_dmamask = 0xffffffffUL;

arch/arm/plat-orion/include/plat/ehci-orion.h

@@ -11,8 +11,16 @@
 
 #include <linux/mbus.h>
 
+enum orion_ehci_phy_ver {
+	EHCI_PHY_ORION,
+	EHCI_PHY_DD,
+	EHCI_PHY_KW,
+	EHCI_PHY_NA,
+};
+
 struct orion_ehci_data {
 	struct mbus_dram_target_info	*dram;
+	enum orion_ehci_phy_ver phy_version;
 };