efi-pstore: fix kernel-doc argument name

The first argument name in the kernel-doc argument list for
efi_pstore_scan_sysfs_enter() was slightly off. Fix it for the
kernel doc.
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

drivers/firmware/efi/efi-pstore.c

@@ -103,7 +103,7 @@ static int efi_pstore_read_func(struct efivar_entry *entry, void *data)
 
 /**
  * efi_pstore_scan_sysfs_enter
- * @entry: scanning entry
+ * @pos: scanning entry
  * @next: next entry
  * @head: list head
  */