radix tree test suite: Fix compilation

An include of xarray.h was added to lib/idr.c without updating the test
suite.

Signed-off-by: Matthew Wilcox <willy@infradead.org>

diff --git a/tools/testing/radix-tree/linux/xarray.h b/tools/testing/radix-tree/linux/xarray.h
new file mode 100644 (file)
index 0000000..df3812c
--- /dev/null
+++ b/tools/testing/radix-tree/linux/xarray.h
@@ -0,0 +1,2 @@
+#include "generated/map-shift.h"
+#include "../../../../include/linux/xarray.h"