[ARM] 3425/1: xsc3: need to include pgtable-hwdef.h

Patch from Lennert Buytenhek

Adapt xsc3 to the changes in 74945c86
(xsc3 was written before but merged after the latter went in.)
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/proc-xsc3.S

@@ -30,6 +30,7 @@
 #include <asm/procinfo.h>
 #include <asm/hardware.h>
 #include <asm/pgtable.h>
+#include <asm/pgtable-hwdef.h>
 #include <asm/page.h>
 #include <asm/ptrace.h>
 #include "proc-macros.S"