Do NOT hide 'utime'. When building binutils for the target using buildroot

it was undefined. How about when you finish playing hide and seek with
symbols you do a complete buildroot build and see if everything really
works. $!#@$!#@

libc/sysdeps/linux/common/utime.c

@@ -13,7 +13,7 @@
 libc_hidden_proto(utime)
 
 #ifdef __NR_utime
-attribute_hidden _syscall2(int, utime, const char *, file, const struct utimbuf *, times);
+_syscall2(int, utime, const char *, file, const struct utimbuf *, times);
 #else
 #include <stdlib.h>
 #include <sys/time.h>