staging: brcm80211: Better debug support added to brcmfmac driver

With the current implementation there is no way to selectively enable
required debug messages, as all the messages are currently under WL_DBG.
With this fix, we are introducing several log levels which will enable
us to print only the required debug messages.
WL_ERR --> Prints error messages
WL_CONN --> Prints all debug messages pertaining to connection
management
WL_SCAN --> Prints all debug messages pertaining to scanning
WL_TRACE --> Prints all trace(Enter/Exit) sequence of cfg80211 calls
WL_INFO --> Prints all informational messages.
By default, only WL_ERR messages are enabled.

Cc: devel@linuxdriverproject.org
Cc: linux-wireless@vger.kernel.org
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Brett Rudley <brudley@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/brcm80211/brcmfmac/dhd_common.c

@@ -586,6 +586,8 @@ static void wl_show_host_event(wl_event_msg_t *event, void *event_data)
 	}
 
 	DHD_EVENT(("EVENT: %s, event ID = %d\n", event_name, event_type));
+	DHD_EVENT(("flags 0x%04x, status %d, reason %d, auth_type %d MAC %s\n",
+				flags, status, reason, auth_type, eabuf));
 
 	if (flags & WLC_EVENT_MSG_LINK)
 		link = true;

drivers/staging/brcm80211/brcmfmac/dhd_linux.c

@@ -1946,7 +1946,6 @@ dhd_pub_t *dhd_attach(struct dhd_bus *bus, uint bus_hdrlen)
 			strcpy(fw_path, wl_cfg80211_get_fwname());
 			strcpy(nv_path, wl_cfg80211_get_nvramname());
 		}
-		wl_cfg80211_dbg_level(DBG_CFG80211_GET());
 	}
 
 	/* Set up the watchdog timer */