ppc64le: fix build with UFFD

The __u64 is 'unsigned long' on Power and 'unsigned long long' on x86_64.
Using PRI?64 does not help because, for instance, PRIu64 is 'lu'.

According to [1] the solution is to define __SANE_USERSPACE_TYPES__ for
Power builds

[1] http://thread.gmane.org/gmane.linux.kernel/1425475/focus=1427433Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Acked-by: Adrian Reber <areber@redhat.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Makefile

@@ -56,7 +56,7 @@ endif
 ifeq ($(ARCH),ppc64)
         LDARCH		:= powerpc:common64
         VDSO		:= y
-        DEFINES		:= -DCONFIG_PPC64
+        DEFINES		:= -DCONFIG_PPC64 -D__SANE_USERSPACE_TYPES__
 endif
 
 ifeq ($(ARCH),x86)