Move setting CONFIG_BOOTP_VCI_STRING to before including the vexpress-common header

Signed-off-by: Dennis Gilmore <dennis@ausil.us>
diff --git a/include/configs/vexpress_ca5x2.h b/include/configs/vexpress_ca5x2.h
index 7719d59..a4ffdf5 100644
--- a/include/configs/vexpress_ca5x2.h
+++ b/include/configs/vexpress_ca5x2.h
@@ -12,7 +12,7 @@
 #define __VEXPRESS_CA5X2_h
 
 #define CONFIG_VEXPRESS_EXTENDED_MEMORY_MAP
-#include "vexpress_common.h"
 #define CONFIG_BOOTP_VCI_STRING     "U-boot.armv7.vexpress_ca5x2"
+#include "vexpress_common.h"
 
 #endif /* __VEXPRESS_CA5X2_h */