mac80211: backport today's brcmfmac changes

It should improve msgbuf throughput (PCIe devices like BCM43602).

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 45767

package/kernel/mac80211/patches/367-brcmfmac-avoid-gcc-5.1-warning.patch

@@ -0,0 +1,30 @@
+From: Arnd Bergmann <arnd@arndb.de>
+Date: Tue, 12 May 2015 23:54:25 +0200
+Subject: [PATCH] brcmfmac: avoid gcc-5.1 warning
+
+gcc-5.0 gained a new warning in the fwsignal portion of the brcmfmac
+driver:
+
+drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c: In function 'brcmf_fws_txs_process':
+drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c:1478:8: warning: 'skb' may be used uninitialized in this function [-Wmaybe-uninitialized]
+
+This is a false positive, and marking the brcmf_fws_hanger_poppkt function
+as 'static inline' makes the warning go away. I have checked the object
+file output and while a little code gets moved around, the size of
+the binary remains identical.
+
+Signed-off-by: Arnd Bergmann <arnd@arndb.de>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+
+--- a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
++++ b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
+@@ -635,7 +635,7 @@ static int brcmf_fws_hanger_pushpkt(stru
+ 	return 0;
+ }
+ 
+-static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h,
++static inline int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h,
+ 					  u32 slot_id, struct sk_buff **pktout,
+ 					  bool remove_item)
+ {