wireless: brcmfmac: Use netif_rx().

Since commit
   baebdf48 ("net: dev: Makes sure netif_rx() can be invoked in any context.")

the function netif_rx() can be used in preemptible/thread context as
well as in interrupt context.

Use netif_rx().

Cc: Arend van Spriel <aspriel@gmail.com>
Cc: Chi-hsien Lin <chi-hsien.lin@infineon.com>
Cc: Chung-hsien Hsu <chung-hsien.hsu@infineon.com>
Cc: Franky Lin <franky.lin@broadcom.com>
Cc: Hante Meuleman <hante.meuleman@broadcom.com>
Cc: Kalle Valo <kvalo@kernel.org>
Cc: SHA-cyfmac-dev-list@infineon.com
Cc: Wright Feng <wright.feng@infineon.com>
Cc: brcm80211-dev-list.pdl@broadcom.com
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>