config: moved from core to sys

There's no need to run config_load from core directly, can be done by
auto_init.

core/kernel_init.c

@@ -39,10 +39,6 @@
 #include <auto_init.h>
 #endif
 
-#ifdef MODULE_CONFIG
-#include "config.h"
-#endif
-
 volatile int lpm_prevent_sleep = 0;
 
 extern int main(void);
@@ -97,11 +93,6 @@ void kernel_init(void)
         printf("kernel_init(): error creating main task.\n");
     }
 
-#ifdef MODULE_CONFIG
-    DEBUG("kernel_init(): loading config\n");
-    config_load();
-#endif
-
     printf("kernel_init(): jumping into first task...\n");
 
     cpu_switch_context_exit();

sys/auto_init/auto_init.c

@@ -19,6 +19,10 @@
 
 #include "auto_init.h"
 
+#ifdef MODULE_CONFIG
+#include "config.h"
+#endif
+
 #ifdef MODULE_SHT11
 #include "sht11.h"
 #endif
@@ -187,6 +191,11 @@ void auto_init_net_if(void)
 
 void auto_init(void)
 {
+#ifdef MODULE_CONFIG
+    DEBUG("Auto init loading config\n");
+    config_load();
+#endif
+
 #ifdef MODULE_VTIMER
     DEBUG("Auto init vtimer module.\n");
     vtimer_init();