rt2x00: Add support for RT5390 chip

Add new RT5390 chip support

Signed-off-by: Shiang Tu <shiang_tu@ralinktech.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 64c6ef5..1df432c 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -189,6 +189,7 @@
 #define RT3572		0x3572
 #define RT3593		0x3593	/* PCIe */
 #define RT3883		0x3883	/* WSOC */
+#define RT5390         0x5390  /* 2.4GHz */
 
 	u16 rf;
 	u16 rev;