Make use of ARRAY_SIZE()

Created with coccinelle patch:

@@
type T;
T[] E;
@@
- (sizeof(E)/sizeof(*E))
+ ARRAY_SIZE(E)

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
diff --git a/testcases/kernel/syscalls/chroot/chroot03.c b/testcases/kernel/syscalls/chroot/chroot03.c
index 943b728..d4e2584 100644
--- a/testcases/kernel/syscalls/chroot/chroot03.c
+++ b/testcases/kernel/syscalls/chroot/chroot03.c
@@ -93,7 +93,7 @@
 	{symbolic_dir, ELOOP}
 };
 
-int TST_TOTAL = (sizeof(TC) / sizeof(*TC));
+int TST_TOTAL = ARRAY_SIZE(TC);
 
 static char *bad_addr;