ASoC: SOF: PM: rename sof_send_pm_ipc to sof_send_pm_ctx_ipc

The helper sof_send_pm_ipc() is only suitable for context save/restore
IPCs' sending, so rename it to sof_send_pm_ctx_ipc here.
Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191025224122.7718-13-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/pm.c

@@ -197,7 +197,7 @@ static int sof_restore_pipelines(struct snd_sof_dev *sdev)
 	return ret;
 }
 
-static int sof_send_pm_ipc(struct snd_sof_dev *sdev, int cmd)
+static int sof_send_pm_ctx_ipc(struct snd_sof_dev *sdev, int cmd)
 {
 	struct sof_ipc_pm_ctx pm_ctx;
 	struct sof_ipc_reply reply;
@@ -320,7 +320,7 @@ static int sof_resume(struct device *dev, bool runtime_resume)
 	}
 
 	/* notify DSP of system resume */
-	ret = sof_send_pm_ipc(sdev, SOF_IPC_PM_CTX_RESTORE);
+	ret = sof_send_pm_ctx_ipc(sdev, SOF_IPC_PM_CTX_RESTORE);
 	if (ret < 0)
 		dev_err(sdev->dev,
 			"error: ctx_restore ipc error during resume %d\n",
@@ -361,7 +361,7 @@ static int sof_suspend(struct device *dev, bool runtime_suspend)
 		sof_cache_debugfs(sdev);
 #endif
 	/* notify DSP of upcoming power down */
-	ret = sof_send_pm_ipc(sdev, SOF_IPC_PM_CTX_SAVE);
+	ret = sof_send_pm_ctx_ipc(sdev, SOF_IPC_PM_CTX_SAVE);
 	if (ret == -EBUSY || ret == -EAGAIN) {
 		/*
 		 * runtime PM has logic to handle -EBUSY/-EAGAIN so