libpayload: External code

This is external and properly licensed code that I pulled into the tree.
          
Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3171 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

payloads/libpayload/util/kconfig/kconfig_load.c

@@ -0,0 +1,35 @@
+#include <dlfcn.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "lkc.h"
+
+#define P(name,type,arg)	type (*name ## _p) arg
+#include "lkc_proto.h"
+#undef P
+
+void kconfig_load(void)
+{
+	void *handle;
+	char *error;
+
+	handle = dlopen("./libkconfig.so", RTLD_LAZY);
+	if (!handle) {
+		handle = dlopen("./scripts/kconfig/libkconfig.so", RTLD_LAZY);
+		if (!handle) {
+			fprintf(stderr, "%s\n", dlerror());
+			exit(1);
+		}
+	}
+
+#define P(name,type,arg)			\
+{						\
+	name ## _p = dlsym(handle, #name);	\
+        if ((error = dlerror()))  {		\
+                fprintf(stderr, "%s\n", error);	\
+		exit(1);			\
+	}					\
+}
+#include "lkc_proto.h"
+#undef P
+}