[Bug 780] Fix iwpriv sw_reset doesn't reset essid.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
--
diff -urp ipw2200-1.0.6/ipw2200.c ipw2200-1.0.6-sw_reset-fix/ipw2200.c
--- ipw2200-1.0.6/ipw2200.c	2005-07-14 03:00:28.000000000 +0800
+++ ipw2200-1.0.6-sw_reset-fix/ipw2200.c	2005-09-12 10:40:57.000000000 +0800
@@ -8007,6 +8007,10 @@ static int ipw_sw_reset(struct ipw_priv 
 	else
 		IPW_DEBUG_INFO("Auto adhoc creation disabled.\n");
 
+	priv->config &= ~CFG_STATIC_ESSID;
+	priv->essid_len = 0;
+	memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
+
 	if (disable) {
 		priv->status |= STATUS_RF_KILL_SW;
 		IPW_DEBUG_INFO("Radio disabled.\n");