cleanup: include/: move misc/util.h to sys/util.h

move misc/util.h to sys/util.h and
create a shim for backward-compatibility.

No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.

Related to #16539

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
diff --git a/drivers/spi/spi_ll_stm32.c b/drivers/spi/spi_ll_stm32.c
index 0d72a7a..d7383ca 100644
--- a/drivers/spi/spi_ll_stm32.c
+++ b/drivers/spi/spi_ll_stm32.c
@@ -8,7 +8,7 @@
 #include <logging/log.h>
 LOG_MODULE_REGISTER(spi_ll_stm32);
 
-#include <misc/util.h>
+#include <sys/util.h>
 #include <kernel.h>
 #include <soc.h>
 #include <errno.h>