[PATCH] rt2x00: Cleanup if-statements

Cleanup if-statements for simple 1/0 register field values.

This also fixes a endian bug in rt2500usb when working
with the PHY_CSR2 initialization. As well as a bug
in the enabling of the LED in rt73usb.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.h b/drivers/net/wireless/rt2x00/rt2500usb.h
index b18d56e..2741840 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.h
+++ b/drivers/net/wireless/rt2x00/rt2500usb.h
@@ -430,10 +430,21 @@
 
 /*
  * MAC configuration registers.
+ */
+
+/*
  * PHY_CSR2: TX MAC configuration.
- * PHY_CSR3: RX MAC configuration.
+ * NOTE: Both register fields are complete dummy,
+ * documentation and legacy drivers are unclear un
+ * what this register means or what fields exists.
  */
 #define PHY_CSR2			0x04c4
+#define PHY_CSR2_LNA			FIELD16(0x0002)
+#define PHY_CSR2_LNA_MODE		FIELD16(0x3000)
+
+/*
+ * PHY_CSR3: RX MAC configuration.
+ */
 #define PHY_CSR3			0x04c6
 
 /*