lguest: fix example launcher compile after moved asm-x86 dir.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

Documentation/lguest/Makefile

 # This creates the demonstration utility "lguest" which runs a Linux guest.
-CFLAGS:=-Wall -Wmissing-declarations -Wmissing-prototypes -O3 -I../../include
+CFLAGS:=-Wall -Wmissing-declarations -Wmissing-prototypes -O3 -I../../include -I../../arch/x86/include
 LDLIBS:=-lz
 
 all: lguest

Documentation/lguest/lguest.c

@@ -44,7 +44,7 @@
 #include "linux/virtio_console.h"
 #include "linux/virtio_rng.h"
 #include "linux/virtio_ring.h"
-#include "asm-x86/bootparam.h"
+#include "asm/bootparam.h"
 /*L:110 We can ignore the 39 include files we need for this program, but I do
  * want to draw attention to the use of kernel-style types.
  *