zd1211rw: Fixed incorrect constant name.

Trial and error reveals that CR_ZD1211B_TX_PWR_CTL* do not affect the
transmission power.  Instead these registers seem to control the contention
windows limits for different QoS access categories.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/zd1211rw/zd_chip.c b/drivers/net/wireless/zd1211rw/zd_chip.c
index e3fba6f..db96adf 100644
--- a/drivers/net/wireless/zd1211rw/zd_chip.c
+++ b/drivers/net/wireless/zd1211rw/zd_chip.c
@@ -771,10 +771,10 @@
 {
 	static const struct zd_ioreq32 ioreqs[] = {
 		{ CR_ZD1211B_RETRY_MAX,		0x02020202 },
-		{ CR_ZD1211B_TX_PWR_CTL4,	0x007f003f },
-		{ CR_ZD1211B_TX_PWR_CTL3,	0x007f003f },
-		{ CR_ZD1211B_TX_PWR_CTL2,       0x003f001f },
-		{ CR_ZD1211B_TX_PWR_CTL1,       0x001f000f },
+		{ CR_ZD1211B_CWIN_MAX_MIN_AC0,	0x007f003f },
+		{ CR_ZD1211B_CWIN_MAX_MIN_AC1,	0x007f003f },
+		{ CR_ZD1211B_CWIN_MAX_MIN_AC2,  0x003f001f },
+		{ CR_ZD1211B_CWIN_MAX_MIN_AC3,  0x001f000f },
 		{ CR_ZD1211B_AIFS_CTL1,		0x00280028 },
 		{ CR_ZD1211B_AIFS_CTL2,		0x008C003C },
 		{ CR_ZD1211B_TXOP,		0x01800824 },