staging: brcm80211: remove global variable brcmf_roam from fullmac

Remove unnecessary global variable
Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/brcm80211/brcmfmac/dhd.h

@@ -673,9 +673,6 @@ extern uint brcmf_arp_mode;
 /* ARP offload enable */
 extern uint brcmf_arp_enable;
 
-/* Roaming mode control */
-extern uint brcmf_roam;
-
 /* Roaming mode control */
 extern uint brcmf_radio_up;
 

drivers/staging/brcm80211/brcmfmac/dhd_common.c

@@ -794,6 +794,7 @@ int brcmf_c_preinit_ioctls(struct brcmf_pub *drvr)
 	char buf[128], *ptr;
 	u32 dongle_align = BRCMF_SDALIGN;
 	u32 glom = 0;
+	u32 roaming = 1;
 	uint bcn_timeout = 3;
 	int scan_assoc_time = 40;
 	int scan_unassoc_time = 40;
@@ -838,7 +839,7 @@ int brcmf_c_preinit_ioctls(struct brcmf_pub *drvr)
 
 	/* Enable/Disable build-in roaming to allowed ext supplicant to take
 		 of romaing */
-	brcmu_mkiovar("roam_off", (char *)&brcmf_roam, 4,
+	brcmu_mkiovar("roam_off", (char *)&roaming, 4,
 		      iovbuf, sizeof(iovbuf));
 	brcmf_proto_cdc_set_ioctl(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 				  sizeof(iovbuf));

drivers/staging/brcm80211/brcmfmac/dhd_linux.c

@@ -98,9 +98,6 @@ module_param(brcmf_arp_mode, uint, 0);
 uint brcmf_arp_enable = true;
 module_param(brcmf_arp_enable, uint, 0);
 
-/* Contorl fw roaming */
-uint brcmf_roam = 1;
-
 /* Control radio state */
 uint brcmf_radio_up = 1;