Enable sys_ftruncate64 on ppc32.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@4891 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/vki_unistd-ppc32-linux.h b/coregrind/vki_unistd-ppc32-linux.h
index a7f5769..0ee5a40 100644
--- a/coregrind/vki_unistd-ppc32-linux.h
+++ b/coregrind/vki_unistd-ppc32-linux.h
@@ -223,7 +223,7 @@
 //#define __NR_readahead		191
 #define __NR_mmap2			192
 //#define __NR_truncate64		193
-//#define __NR_ftruncate64		194
+#define __NR_ftruncate64		194
 #define __NR_stat64			195
 #define __NR_lstat64			196
 #define __NR_fstat64			197