mwl8k: undo transmit queue 0/1 swapping in mwl8k_cmd_set_edca_params()

The comment and code in mwl8k_cmd_set_edca_params() suggest that the
mapping between SET_EDCA_PARAMS queue numbers and transmit rings isn't
actually 1:1, while tests show that the mapping is in fact 1:1.  So,
get rid of the transmit queue 0/1 swapping.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index cc16041..3f5fdb6 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -2397,12 +2397,6 @@
 	if (cmd == NULL)
 		return -ENOMEM;
 
-	/*
-	 * Queues 0 (BE) and 1 (BK) are swapped in hardware for
-	 * this call.
-	 */
-	qnum ^= !(qnum >> 1);
-
 	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
 	cmd->header.length = cpu_to_le16(sizeof(*cmd));
 	cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);