tty: serial: qcom-geni-serial: Implement start_rx callback

In suspend sequence stop_rx will be performed only if implementation for
start_rx callback is present.

Set qcom_geni_serial_start_rx as callback for start_rx so that stop_rx is
performed.

Fixes: c9d2325 ("serial: core: Do stop_rx in suspend path for console if console_suspend is disabled")
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Vijaya Krishna Nivarthi <quic_vnivarth@quicinc.com>
Link: https://lore.kernel.org/r/1654627965-1461-3-git-send-email-quic_vnivarth@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Vijaya Krishna Nivarthi

drivers/tty/serial/qcom_geni_serial.c

@@ -1306,6 +1306,7 @@ static const struct uart_ops qcom_geni_console_pops = {
 	.stop_tx = qcom_geni_serial_stop_tx,
 	.start_tx = qcom_geni_serial_start_tx,
 	.stop_rx = qcom_geni_serial_stop_rx,
+	.start_rx = qcom_geni_serial_start_rx,
 	.set_termios = qcom_geni_serial_set_termios,
 	.startup = qcom_geni_serial_startup,
 	.request_port = qcom_geni_serial_request_port,