[PATCH] compat: add header guard to xlat.h

[Jan Beulich]

This is to conform with Misra C:2012 Directive 4.10.

Reported-by: Stefano Stabellini <sstabell...@kernel.org>
Signed-off-by: Jan Beulich <jbeul...@suse.com>

--- a/xen/include/Makefile
+++ b/xen/include/Makefile
@@ -105,9 +105,14 @@ xlat-y := $(shell sed -ne 's,@arch@,$(co
 xlat-y := $(filter $(patsubst compat/%,%,$(headers-y)),$(xlat-y))
 
 quiet_cmd_xlat_h = GEN     $@
-cmd_xlat_h = \
-       cat $(filter %.h,$^) >$@.new; \
-       mv -f $@.new $@
+define cmd_xlat_h
+    echo "#ifndef COMPAT_XLAT_H" >$@.new; \
+    echo "#define COMPAT_XLAT_H" >>$@.new; \
+    cat $(filter %.h,$^) >>$@.new; \
+    echo "" >>$@.new; \
+    echo "#endif /* COMPAT_XLAT_H */" >>$@.new; \
+    mv -f $@.new $@
+endef
 
 $(obj)/compat/xlat.h: $(addprefix $(obj)/compat/.xlat/,$(xlat-y)) FORCE
        $(call if_changed,xlat_h)