staging: rtl8723au: Make rtl8723a_set_BTCoex_AP_mode_FwRsvdPkt_cmd() a no-op...

staging: rtl8723au: Make rtl8723a_set_BTCoex_AP_mode_FwRsvdPkt_cmd() a no-op when no co-exist enabled

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>