[PATCH] base: soc: fixup sys_soc.h kernel-doc warnings

- add function return values in 2 places
- use the correct function parameter name in kernel-doc comments

to avoid these kernel-doc warnings:

Warning: include/linux/sys_soc.h:25 No description found for return value of 'soc_device_register'
Warning: include/linux/sys_soc.h:37 No description found for return value of 'soc_device_to_device'
Warning: include/linux/sys_soc.h:31 function parameter 'soc_dev' not described in 'soc_device_unregister'
Warning: include/linux/sys_soc.h:31 Excess function parameter 'dev' description in 'soc_device_unregister'

Signed-off-by: Randy Dunlap <[email protected]>
---
Cc: Bjorn Andersson <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Danilo Krummrich <[email protected]>
Cc: [email protected]

 include/linux/sys_soc.h |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- linux-next-20260722.orig/include/linux/sys_soc.h
+++ linux-next-20260722/include/linux/sys_soc.h
@@ -21,19 +21,26 @@ struct soc_device_attribute {
 /**
  * soc_device_register - register SoC as a device
  * @soc_plat_dev_attr: Attributes passed from platform to be attributed to a SoC
+ *
+ * Returns:
+ * - %NULL if the SoC bus is not yet registered;
+ * - on success, the newly allocated &struct soc_device pointer;
+ * - on failure, a negative error code as an ERR_PTR().
  */
 struct soc_device *soc_device_register(
 	struct soc_device_attribute *soc_plat_dev_attr);
 
 /**
  * soc_device_unregister - unregister SoC device
- * @dev: SoC device to be unregistered
+ * @soc_dev: SoC device to be unregistered
  */
 void soc_device_unregister(struct soc_device *soc_dev);
 
 /**
  * soc_device_to_device - helper function to fetch struct device
  * @soc: Previously registered SoC device container
+ *
+ * Returns: &struct device pointer for this @soc
  */
 struct device *soc_device_to_device(struct soc_device *soc);