Fix "error: config.h: No such file or directory" on BE_ARCHS

Index: src/samdump2/Makefile.in
--- src/samdump2/Makefile.in.orig
+++ src/samdump2/Makefile.in
@@ -17,7 +17,7 @@
 
 include ../common.mk
 
-CFLAGS += -I../core
+CFLAGS += -I../core -I../..
 
 all: libsamdump2.a
 
