ASoC: SOF: Intel: hda: Use generic function for fw ready / mem windows creation

We can use generic sof_fw_ready function and reduce code duplication.
Careful here that we need to provide the implementation for
get_mailbox_offset and get_window_offset.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190807150203.26359-7-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/intel/apl.c

@@ -46,7 +46,9 @@ const struct snd_sof_dsp_ops sof_apl_ops = {
 
 	/* ipc */
 	.send_msg	= hda_dsp_ipc_send_msg,
-	.fw_ready	= hda_dsp_ipc_fw_ready,
+	.fw_ready	= sof_fw_ready,
+	.get_mailbox_offset = hda_dsp_ipc_get_mailbox_offset,
+	.get_window_offset = hda_dsp_ipc_get_window_offset,
 
 	.ipc_msg_data	= hda_ipc_msg_data,
 	.ipc_pcm_params	= hda_ipc_pcm_params,