staging: brcm80211: remove unnecessary include from nvram_ro.c

Source file included bcmotp.h but did not use any declared item
from that include file so it can safely be removed.
Reviewed-by: NRoland Vossen <rvossen@broadcom.com>
Reviewed-by: NHenry Ptasinski <henryp@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/brcm80211/util/nvram/nvram_ro.c

@@ -22,7 +22,6 @@
 #include <bcmnvram.h>
 #include <sbchipc.h>
 #include <bcmsrom.h>
-#include <bcmotp.h>
 #include <bcmdevs.h>
 #include <hndsoc.h>