ASoC: SOF: imx8: Make some functions static

Fix sparse warnings:

sound/soc/sof/imx/imx8.c:104:6: warning: symbol 'imx8_dsp_handle_reply' was not declared. Should it be static?
sound/soc/sof/imx/imx8.c:115:6: warning: symbol 'imx8_dsp_handle_request' was not declared. Should it be static?
sound/soc/sof/imx/imx8.c:336:5: warning: symbol 'imx8_get_bar_index' was not declared. Should it be static?
sound/soc/sof/imx/imx8.c:341:6: warning: symbol 'imx8_ipc_msg_data' was not declared. Should it be static?
sound/soc/sof/imx/imx8.c:348:5: warning: symbol 'imx8_ipc_pcm_params' was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/20190823125939.30012-1-yuehaibing@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/imx/imx8.c

@@ -101,7 +101,7 @@ static int imx8_get_window_offset(struct snd_sof_dev *sdev, u32 id)
 	return MBOX_OFFSET;
 }
 
-void imx8_dsp_handle_reply(struct imx_dsp_ipc *ipc)
+static void imx8_dsp_handle_reply(struct imx_dsp_ipc *ipc)
 {
 	struct imx8_priv *priv = imx_dsp_get_data(ipc);
 	unsigned long flags;
@@ -112,7 +112,7 @@ void imx8_dsp_handle_reply(struct imx_dsp_ipc *ipc)
 	spin_unlock_irqrestore(&priv->sdev->ipc_lock, flags);
 }
 
-void imx8_dsp_handle_request(struct imx_dsp_ipc *ipc)
+static void imx8_dsp_handle_request(struct imx_dsp_ipc *ipc)
 {
 	struct imx8_priv *priv = imx_dsp_get_data(ipc);
 
@@ -333,21 +333,21 @@ static int imx8_remove(struct snd_sof_dev *sdev)
 }
 
 /* on i.MX8 there is 1 to 1 match between type and BAR idx */
-int imx8_get_bar_index(struct snd_sof_dev *sdev, u32 type)
+static int imx8_get_bar_index(struct snd_sof_dev *sdev, u32 type)
 {
 	return type;
 }
 
-void imx8_ipc_msg_data(struct snd_sof_dev *sdev,
-		       struct snd_pcm_substream *substream,
-		       void *p, size_t sz)
+static void imx8_ipc_msg_data(struct snd_sof_dev *sdev,
+			      struct snd_pcm_substream *substream,
+			      void *p, size_t sz)
 {
 	sof_mailbox_read(sdev, sdev->dsp_box.offset, p, sz);
 }
 
-int imx8_ipc_pcm_params(struct snd_sof_dev *sdev,
-			struct snd_pcm_substream *substream,
-			const struct sof_ipc_pcm_params_reply *reply)
+static int imx8_ipc_pcm_params(struct snd_sof_dev *sdev,
+			       struct snd_pcm_substream *substream,
+			       const struct sof_ipc_pcm_params_reply *reply)
 {
 	return 0;
 }