phy: marvell: add comphy type PHY_TYPE_USB3

- For some Marvell SoCs, like armada-3700, there are both
  USB host and device controller, but on PHY level the
  configuration is the same.
- The new type supports both USB device and USB host
- This patch is cherry-picked from u-boot-2015 as-is.

Change-Id: I01262027edd8ec23391cff6fb409b3009aedfbb9
Signed-off-by: jinghua <jinghua@marvell.com>
Signed-off-by: Ken Ma <make@marvell.com>
Reviewed-by: Igal Liberman <igall@marvell.com>

drivers/phy/marvell/comphy_core.c

@@ -40,7 +40,7 @@ static const char *get_type_string(u32 type)
 	static const char * const type_strings[] = {
 		"UNCONNECTED", "PEX0", "PEX1", "PEX2", "PEX3",
 		"SATA0", "SATA1", "SATA2", "SATA3", "SGMII0",
-		"SGMII1", "SGMII2", "SGMII3", "QSGMII",
+		"SGMII1", "SGMII2", "SGMII3", "QSGMII", "USB3"
 		"USB3_HOST0", "USB3_HOST1", "USB3_DEVICE",
 		"XAUI0", "XAUI1", "XAUI2", "XAUI3",
 		"RXAUI0", "RXAUI1", "SFI", "IGNORE"

include/dt-bindings/comphy/comphy_data.h

@@ -33,18 +33,19 @@
 #define PHY_TYPE_SGMII2			11
 #define PHY_TYPE_SGMII3			12
 #define PHY_TYPE_QSGMII			13
-#define PHY_TYPE_USB3_HOST0		14
-#define PHY_TYPE_USB3_HOST1		15
-#define PHY_TYPE_USB3_DEVICE		16
-#define PHY_TYPE_XAUI0			17
-#define PHY_TYPE_XAUI1			18
-#define PHY_TYPE_XAUI2			19
-#define PHY_TYPE_XAUI3			20
-#define PHY_TYPE_RXAUI0			21
-#define PHY_TYPE_RXAUI1			22
-#define PHY_TYPE_SFI			23
-#define PHY_TYPE_IGNORE			24
-#define PHY_TYPE_MAX			25
+#define PHY_TYPE_USB3			14
+#define PHY_TYPE_USB3_HOST0		15
+#define PHY_TYPE_USB3_HOST1		16
+#define PHY_TYPE_USB3_DEVICE		17
+#define PHY_TYPE_XAUI0			18
+#define PHY_TYPE_XAUI1			19
+#define PHY_TYPE_XAUI2			20
+#define PHY_TYPE_XAUI3			21
+#define PHY_TYPE_RXAUI0			22
+#define PHY_TYPE_RXAUI1			23
+#define PHY_TYPE_SFI			24
+#define PHY_TYPE_IGNORE			25
+#define PHY_TYPE_MAX			26
 #define PHY_TYPE_INVALID		0xff
 
 #define PHY_POLARITY_NO_INVERT		0