Generate xlat/*.in files

Automatically convert xlat structures from *.c files to xlat/*.in files
using "./generate_xlat_in.sh *.c" command.
diff --git a/xlat/policies.in b/xlat/policies.in
new file mode 100644
index 0000000..22599fd
--- /dev/null
+++ b/xlat/policies.in
@@ -0,0 +1,4 @@
+MPOL_DEFAULT
+MPOL_PREFERRED
+MPOL_BIND
+MPOL_INTERLEAVE