brcmfmac: move ALLFFMAC variable in flowring module

The only user of ALLFFMAC is the flowring module so no need to
expose it in a header file.
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c

@@ -36,8 +36,6 @@ MODULE_AUTHOR("Broadcom Corporation");
 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
 MODULE_LICENSE("Dual BSD/GPL");
 
-const u8 ALLFFMAC[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
-
 #define BRCMF_DEFAULT_SCAN_CHANNEL_TIME	40
 #define BRCMF_DEFAULT_SCAN_UNASSOC_TIME	40
 

drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h

@@ -19,8 +19,6 @@
 #include <linux/platform_data/brcmfmac.h>
 #include "fwil_types.h"
 
-extern const u8 ALLFFMAC[ETH_ALEN];
-
 #define BRCMF_FW_ALTPATH_LEN			256
 
 /* Definitions for the module global and device specific settings are defined

drivers/net/wireless/broadcom/brcm80211/brcmfmac/flowring.c

@@ -46,6 +46,8 @@ static const u8 brcmf_flowring_prio2fifo[] = {
 	3
 };
 
+static const u8 ALLFFMAC[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+
 
 static bool
 brcmf_flowring_is_tdls_mac(struct brcmf_flowring *flow, u8 mac[ETH_ALEN])