bpf: Provide a linux/types.h override for bpf selftests.

We do not want to use the architecture's type.h header when
building BPF programs which are always 64-bit.

Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/bpf/Makefile

@@ -35,6 +35,7 @@ $(BPFOBJ): force
 CLANG ?= clang
 
 %.o: %.c
-	$(CLANG) -I. -I../../../include/uapi -I../../../../samples/bpf/ \
+	$(CLANG) -I. -I./include/uapi -I../../../include/uapi \
+		-I../../../../samples/bpf/ \
 		-Wno-compare-distinct-pointer-types \
 		-O2 -target bpf -c $< -o $@

tools/testing/selftests/bpf/include/uapi/linux/types.h

@@ -0,0 +1,6 @@
+#ifndef _UAPI_LINUX_TYPES_H
+#define _UAPI_LINUX_TYPES_H
+
+#include <asm-generic/int-ll64.h>
+
+#endif /* _UAPI_LINUX_TYPES_H */