rt2x00: Initial support for RT5370 USB devices.

Add necessary RF chipset define and basic support for these devices.

Tested-by: Juan Carlos Garza <juancarlosgarza@gmail.com>
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.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/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index 6ed646a..93fb674 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -1751,7 +1751,8 @@
 	    rt2x00_rf(rt2x00dev, RF3052) ||
 	    rt2x00_rf(rt2x00dev, RF3320))
 		rt2800_config_channel_rf3xxx(rt2x00dev, conf, rf, info);
-	else if (rt2x00_rf(rt2x00dev, RF5390))
+	else if (rt2x00_rf(rt2x00dev, RF5370) ||
+		 rt2x00_rf(rt2x00dev, RF5390))
 		rt2800_config_channel_rf53xx(rt2x00dev, conf, rf, info);
 	else
 		rt2800_config_channel_rf2xxx(rt2x00dev, conf, rf, info);
@@ -3686,6 +3687,7 @@
 	    !rt2x00_rf(rt2x00dev, RF3022) &&
 	    !rt2x00_rf(rt2x00dev, RF3052) &&
 	    !rt2x00_rf(rt2x00dev, RF3320) &&
+	    !rt2x00_rf(rt2x00dev, RF5370) &&
 	    !rt2x00_rf(rt2x00dev, RF5390)) {
 		ERROR(rt2x00dev, "Invalid RF chipset detected.\n");
 		return -ENODEV;
@@ -3988,6 +3990,7 @@
 		   rt2x00_rf(rt2x00dev, RF3021) ||
 		   rt2x00_rf(rt2x00dev, RF3022) ||
 		   rt2x00_rf(rt2x00dev, RF3320) ||
+		   rt2x00_rf(rt2x00dev, RF5370) ||
 		   rt2x00_rf(rt2x00dev, RF5390)) {
 		spec->num_channels = 14;
 		spec->channels = rf_vals_3x;