Rename hush to cli_hush

Hush is a command-line interpreter, so rename it to make that clearer.

Signed-off-by: Simon Glass <sjg@chromium.org>

common/main.c

@@ -14,7 +14,7 @@
 #include <common.h>
 #include <command.h>
 #include <fdtdec.h>
-#include <hush.h>
+#include <cli_hush.h>
 #include <malloc.h>
 #include <menu.h>
 #include <post.h>