mwifiex: simplify ad hoc join capability info

While preparing an ad-hoc start command, the capability info bitmap is
needlessly set from the command, and then the ESS bit cleared.

Change to set the bitmap directly without reference to the command.
Signed-off-by: NJames Cameron <quozl@laptop.org>
Acked-by: NAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mwifiex/join.c

@@ -880,9 +880,7 @@ mwifiex_cmd_802_11_ad_hoc_start(struct mwifiex_private *priv,
 
 	/* Set Capability info */
 	bss_desc->cap_info_bitmap |= WLAN_CAPABILITY_IBSS;
-	tmp_cap = le16_to_cpu(adhoc_start->cap_info_bitmap);
-	tmp_cap &= ~WLAN_CAPABILITY_ESS;
-	tmp_cap |= WLAN_CAPABILITY_IBSS;
+	tmp_cap = WLAN_CAPABILITY_IBSS;
 
 	/* Set up privacy in bss_desc */
 	if (priv->sec_info.encryption_mode) {