lib_arm/board.c: remove misleading "test-only" comment.

For a long time, the print_cpuinfo() declaration in lib_arm/board.c
had been marked as "test-only", which is plain wrong considering
current usage.  Delete this misleading comment.

Signed-off-by: Wolfgang Denk <wd@denx.de>

lib_arm/board.c

@@ -258,7 +258,7 @@ static int arm_pci_init(void)
  */
 typedef int (init_fnc_t) (void);
 
-int print_cpuinfo (void); /* test-only */
+int print_cpuinfo (void);
 
 init_fnc_t *init_sequence[] = {
 	cpu_init,		/* basic cpu dependent setup */