brcmsmac: Replace kmalloc/memset with kzalloc

In ai_attach(), space is allocated for an si_info struct. Immediately
after the allocation, routine ai_doattach() is called and that allocated
space is set to zero. As no other routine calls ai_doattach(), kzalloc()
can be utilized.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Acked-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/brcm80211/brcmsmac/aiutils.c

@@ -565,8 +565,6 @@ static struct si_info *ai_doattach(struct si_info *sii,
 	struct bcma_device *cc;
 	uint socitype;
 
-	memset((unsigned char *) sii, 0, sizeof(struct si_info));
-
 	savewin = 0;
 
 	sii->icbus = pbus;
@@ -677,7 +675,7 @@ ai_attach(struct bcma_bus *pbus)
 	struct si_info *sii;
 
 	/* alloc struct si_info */
-	sii = kmalloc(sizeof(struct si_info), GFP_ATOMIC);
+	sii = kzalloc(sizeof(struct si_info), GFP_ATOMIC);
 	if (sii == NULL)
 		return NULL;