lib/bootconfig: Fix the xbc_get_info kerneldoc

Fix the kernel doc of xbc_get_info() to add '@' to the parameters.

Link: https://lkml.kernel.org/r/163525086738.676803.15352231787913236933.stgit@devnote2

Fixes: e306220cb7 ("bootconfig: Add xbc_get_info() for the node information")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

lib/bootconfig.c

@@ -67,8 +67,8 @@ static inline void xbc_free_mem(void *addr, size_t size)
 #endif
 /**
  * xbc_get_info() - Get the information of loaded boot config
- * node_size: A pointer to store the number of nodes.
- * data_size: A pointer to store the size of bootconfig data.
+ * @node_size: A pointer to store the number of nodes.
+ * @data_size: A pointer to store the size of bootconfig data.
  *
  * Get the number of used nodes in @node_size if it is not NULL,
  * and the size of bootconfig data in @data_size if it is not NULL.