Add definition for switch API version 2.3 and a macro to make comparing
the switch hardware version with the (byte-swapped) version macros more
conveniant.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
 drivers/net/dsa/lantiq_gswip.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/dsa/lantiq_gswip.h b/drivers/net/dsa/lantiq_gswip.h
index 5a0ac7a538d9..54cbfad21ada 100644
--- a/drivers/net/dsa/lantiq_gswip.h
+++ b/drivers/net/dsa/lantiq_gswip.h
@@ -7,6 +7,7 @@
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/reset.h>
+#include <linux/swab.h>
 #include <net/dsa.h>
 
 /* GSWIP MDIO Registers */
@@ -93,6 +94,8 @@
 #define   GSWIP_VERSION_2_1		0x021
 #define   GSWIP_VERSION_2_2		0x122
 #define   GSWIP_VERSION_2_2_ETC		0x022
+#define   GSWIP_VERSION_2_3		0x023
+#define GSWIP_VERSION_GE(priv, ver)	((priv)->version >= swab16(ver))
 
 #define GSWIP_BM_RAM_VAL(x)		(0x043 - (x))
 #define GSWIP_BM_RAM_ADDR		0x044
-- 
2.50.1