Include board and config headers in common.h

This ensures they get included everywhere, and fixes a common bug
where we forget one of them and then code which is supposed to be

BUG=none
TEST=build the code

Change-Id: Ic9208f946a3aea4b0b08f546f1919602befa76d4
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/26365

include/common.h

@@ -18,6 +18,15 @@
 #define __packed __attribute__((packed))
 #endif
 
+/*
+ * Include board and core configs, since those hold the CONFIG_ constants for a
+ * given configuration.  This guarantees they get included everywhere, and
+ * fixes a fairly common bug where we gate out code with #ifndef
+ * CONFIG_SOMETHING and but forget to include both of these.
+ */
+#include "board.h"
+#include "config.h"
+
 /* List of common error codes that can be returned */
 enum ec_error_list {
 	/* Success - no error */