tools/lguest: Clean up include dir

It contains a symlinked header we use; ignore it and clean it up
on 'make clean'.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/tools/lguest/.gitignore b/tools/lguest/.gitignore
index 115587f..8d9a838 100644
--- a/tools/lguest/.gitignore
+++ b/tools/lguest/.gitignore
@@ -1 +1,2 @@
 lguest
+include
diff --git a/tools/lguest/Makefile b/tools/lguest/Makefile
index a107b5e..d04599a 100644
--- a/tools/lguest/Makefile
+++ b/tools/lguest/Makefile
@@ -11,3 +11,4 @@
 
 clean:
 	rm -f lguest
+	rm -rf include