ASoC: SOF: ipc3-loader: Print out the non matching ext_man magic number

Print out the found extended manifest magic number in case it is not
matching with the expected one (0x6e614d58) in debug level.
It is fairly unlikely that the firmware does not have ext_man section and
the found value in place of the magic number can help rootcausing boot
related issues.
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220715145216.277003-7-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/ipc3-loader.c

@@ -109,7 +109,7 @@ static int ipc3_fw_ext_man_get_config_data(struct snd_sof_dev *sdev,
 	return 0;
 }
 
-static ssize_t ipc3_fw_ext_man_size(const struct firmware *fw)
+static ssize_t ipc3_fw_ext_man_size(struct snd_sof_dev *sdev, const struct firmware *fw)
 {
 	const struct sof_ext_man_header *head;
 
@@ -131,6 +131,8 @@ static ssize_t ipc3_fw_ext_man_size(const struct firmware *fw)
 		return head->full_size;
 
 	/* otherwise given fw don't have an extended manifest */
+	dev_dbg(sdev->dev, "Unexpected extended manifest magic number: %#x\n",
+		head->magic);
 	return 0;
 }
 
@@ -147,7 +149,7 @@ static size_t sof_ipc3_fw_parse_ext_man(struct snd_sof_dev *sdev)
 
 	head = (struct sof_ext_man_header *)fw->data;
 	remaining = head->full_size - head->header_size;
-	ext_man_size = ipc3_fw_ext_man_size(fw);
+	ext_man_size = ipc3_fw_ext_man_size(sdev, fw);
 
 	/* Assert firmware starts with extended manifest */
 	if (ext_man_size <= 0)