openocd: include config.h in every file .c

Including config.h as first is required for every C file.
Add it to the C files that still miss it.

Change-Id: I1a210e7d3a854958a85a290b086ad8a9f5176425
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6856
Tested-by: jenkins

src/rtos/chromium-ec.c

@@ -7,6 +7,10 @@
  * Chromium-EC RTOS Task Awareness
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <rtos/rtos.h>
 #include <target/target.h>
 #include <target/target_type.h>