kernel: move wait_q.h header to be internal
This header does not expose any public APIs, so move it under
kernel/include and change files including it.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
diff --git a/kernel/stack.c b/kernel/stack.c
index 38c2ccb..27038ce 100644
--- a/kernel/stack.c
+++ b/kernel/stack.c
@@ -13,7 +13,7 @@
#include <zephyr/toolchain.h>
#include <ksched.h>
-#include <zephyr/wait_q.h>
+#include <wait_q.h>
#include <zephyr/sys/check.h>
#include <zephyr/init.h>
#include <zephyr/syscall_handler.h>
