[PATCH] xen/build: Fix MAP rule when called in isolation

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

Now that `make MAP` might rebuild $(TARGET), it needs removing from
no-dot-config-targets.

Otherwise the build eventually fails with:

    CPP     arch/x86/asm-macros.i
  arch/x86/asm-macros.c:1:10: fatal error: asm/asm-defns.h: No such file or
  directory
      1 | #include <asm/asm-defns.h>
        |          ^~~~~~~~~~~~~~~~~

Fixes: e1e72198213b ("xen/build: Fix dependency for the MAP rule")
Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Jan Beulich <JBeulich@xxxxxxxx>
CC: Anthony PERARD <anthony.perard@xxxxxxxxxx>

Backporting notes.  The original, e1e72198213b, wants backporting as far as we
can go.  This patch is only relevant from 6c122d3984a5e onwards, so 4.14,
which is why my main developing/testing on 4.13 didn't spot it.

no-dot-config-targets seems like a very easy way to create breakage...
---
 xen/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/Makefile b/xen/Makefile
index 3a4e3bdd0f95..ec34524ed21d 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -215,7 +215,7 @@ export XEN_ROOT := $(abs_srctree)/..
 clean-targets := %clean
 no-dot-config-targets := $(clean-targets) \
                          uninstall debug cloc \
-                         cscope TAGS tags MAP gtags \
+                         cscope TAGS tags gtags \
                          xenversion
 
 config-build    := n
-- 
2.11.0