kernel: add closing comments to config endifs

Add a closing comment to the endif with the configuration
information to which the endif belongs too.
To make the code more clearer if the configs need adaptions.

Signed-off-by: Simon Hein <Shein@baumer.com>
diff --git a/kernel/msg_q.c b/kernel/msg_q.c
index e11e9a2..b315cde 100644
--- a/kernel/msg_q.c
+++ b/kernel/msg_q.c
@@ -27,7 +27,7 @@
 
 #ifdef CONFIG_OBJ_CORE_MSGQ
 static struct k_obj_type obj_type_msgq;
-#endif
+#endif /* CONFIG_OBJ_CORE_MSGQ */
 
 #ifdef CONFIG_POLL
 static inline void handle_poll_events(struct k_msgq *msgq, uint32_t state)
@@ -55,7 +55,7 @@
 
 #ifdef CONFIG_OBJ_CORE_MSGQ
 	k_obj_core_init_and_link(K_OBJ_CORE(msgq), &obj_type_msgq);
-#endif
+#endif /* CONFIG_OBJ_CORE_MSGQ */
 
 	SYS_PORT_TRACING_OBJ_INIT(k_msgq, msgq);
 
@@ -98,7 +98,7 @@
 	return z_impl_k_msgq_alloc_init(msgq, msg_size, max_msgs);
 }
 #include <syscalls/k_msgq_alloc_init_mrsh.c>
-#endif
+#endif /* CONFIG_USERSPACE */
 
 int k_msgq_cleanup(struct k_msgq *msgq)
 {
@@ -193,7 +193,7 @@
 	return z_impl_k_msgq_put(msgq, data, timeout);
 }
 #include <syscalls/k_msgq_put_mrsh.c>
-#endif
+#endif /* CONFIG_USERSPACE */
 
 void z_impl_k_msgq_get_attrs(struct k_msgq *msgq, struct k_msgq_attrs *attrs)
 {
@@ -211,7 +211,7 @@
 	z_impl_k_msgq_get_attrs(msgq, attrs);
 }
 #include <syscalls/k_msgq_get_attrs_mrsh.c>
-#endif
+#endif /* CONFIG_USERSPACE */
 
 int z_impl_k_msgq_get(struct k_msgq *msgq, void *data, k_timeout_t timeout)
 {
@@ -291,7 +291,7 @@
 	return z_impl_k_msgq_get(msgq, data, timeout);
 }
 #include <syscalls/k_msgq_get_mrsh.c>
-#endif
+#endif /* CONFIG_USERSPACE */
 
 int z_impl_k_msgq_peek(struct k_msgq *msgq, void *data)
 {
@@ -325,7 +325,7 @@
 	return z_impl_k_msgq_peek(msgq, data);
 }
 #include <syscalls/k_msgq_peek_mrsh.c>
-#endif
+#endif /* CONFIG_USERSPACE */
 
 int z_impl_k_msgq_peek_at(struct k_msgq *msgq, void *data, uint32_t idx)
 {
@@ -371,7 +371,7 @@
 	return z_impl_k_msgq_peek_at(msgq, data, idx);
 }
 #include <syscalls/k_msgq_peek_at_mrsh.c>
-#endif
+#endif /* CONFIG_USERSPACE */
 
 void z_impl_k_msgq_purge(struct k_msgq *msgq)
 {
@@ -416,7 +416,7 @@
 }
 #include <syscalls/k_msgq_num_used_get_mrsh.c>
 
-#endif
+#endif /* CONFIG_USERSPACE */
 
 #ifdef CONFIG_OBJ_CORE_MSGQ
 static int init_msgq_obj_core_list(void)
@@ -438,4 +438,4 @@
 SYS_INIT(init_msgq_obj_core_list, PRE_KERNEL_1,
 	 CONFIG_KERNEL_INIT_PRIORITY_OBJECTS);
 
-#endif
+#endif /* CONFIG_OBJ_CORE_MSGQ */