mpc85xx.h: Use <config.h> directly

To ensure that board config headers which set values here in the CFG_SYS
range are used, this header needs to include <config.h> directly.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/mpc85xx.h b/include/mpc85xx.h
index 636734d..ff86c7c 100644
--- a/include/mpc85xx.h
+++ b/include/mpc85xx.h
@@ -6,6 +6,7 @@
 #ifndef	__MPC85xx_H__
 #define __MPC85xx_H__
 
+#include <config.h>
 #if defined(CONFIG_E500)
 #include <e500.h>
 #endif