openocd: fix build with jimtcl 0.83

In jimtcl 0.82, the include file jim.h included in turn stdio.h
This made redundant to include the former in openocd source files.
Since jimtcl 0.83, jim.h drops the include of stdio.h, causing
openocd build to fail.

Include stdio.h in the files that need it.

Change-Id: Ic81c9b273d7520f4d2d8c32bc3e0a6bcfffb67ed
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/8512
Reviewed-by: Jonathan McDowell <noodles-openocd@earth.li>
Tested-by: jenkins

src/helper/configuration.h

@@ -11,6 +11,7 @@
 #ifndef OPENOCD_HELPER_CONFIGURATION_H
 #define OPENOCD_HELPER_CONFIGURATION_H
 
+#include <stdio.h>
 #include <helper/command.h>
 
 int parse_cmdline_args(struct command_context *cmd_ctx,

src/helper/jim-nvp.c

@@ -21,6 +21,7 @@
 #endif
 
 #include "jim-nvp.h"
+#include <stdio.h>
 #include <string.h>
 
 int jim_get_nvp(Jim_Interp *interp,