drivers/net/wireless/iwlwifi/iwl-3945.h: correct CONFIG_IWL4965_LEDS typo

Thakns to Winfried Tilanus <winfried@tilanus.com> for identifying the
problem!
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-3945.h

@@ -779,7 +779,7 @@ struct iwl3945_priv {
 	struct iwl3945_init_alive_resp card_alive_init;
 	struct iwl3945_alive_resp card_alive;
 
-#ifdef CONFIG_IWL4965_LEDS
+#ifdef CONFIG_IWL3945_LEDS
 	struct iwl3945_led led[IWL_LED_TRG_MAX];
 	unsigned long last_blink_time;
 	u8 last_blink_rate;