brcmfmac: fix initialization of struct cfg80211_inform_bss variable

This patch fixes a sparse warning "Using plain integer as NULL pointer"
about cfg80211_inform_bss structure initialization.

Reported-by: kbuild test robot <lkp@intel.com>
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-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/cfg80211.c

@@ -2737,7 +2737,7 @@ static s32 brcmf_inform_single_bss(struct brcmf_cfg80211_info *cfg,
 	u16 notify_interval;
 	u8 *notify_ie;
 	size_t notify_ielen;
-	struct cfg80211_inform_bss bss_data = { 0 };
+	struct cfg80211_inform_bss bss_data = {};
 
 	if (le32_to_cpu(bi->length) > WL_BSS_INFO_MAX) {
 		brcmf_err("Bss info is larger than buffer. Discarding\n");