brcmfmac: replace WL_ERR() with brcmf_err()

Getting rid of wl_cfg80211 specific error log macro.
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h

@@ -19,8 +19,6 @@
 
 #include "dhd_dbg.h"
 
-#define	WL_ERR(fmt, ...)	brcmf_err(fmt, ##__VA_ARGS__)
-
 #define	WL_INFO(fmt, ...)	brcmf_dbg(INFO, fmt, ##__VA_ARGS__)
 #define	WL_TRACE(fmt, ...)	brcmf_dbg(TRACE, fmt, ##__VA_ARGS__)
 #define	WL_SCAN(fmt, ...)	brcmf_dbg(SCAN, fmt, ##__VA_ARGS__)