ia64: fix build (after c/s 25070:4e1d091d10d8)

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/include/asm-ia64/config.h
+++ b/xen/include/asm-ia64/config.h
@@ -73,6 +73,7 @@ typedef int pid_t;
 // now needed for xen/include/mm.h
 typedef unsigned long paddr_t;
 #define INVALID_PADDR (~0UL)
+#define PRIpaddr "016lx"
 // from include/linux/kernel.h
 #define ALIGN(x,a) (((x)+(a)-1)&~((a)-1))