ARM720: bugfix

The "ARM720 uses the new inheritance/nesting scheme" patch
wrongly scrubbed a calloc() from arm720t_target_create().

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

src/target/arm720t.c

@@ -403,8 +403,9 @@ static int arm720t_init_arch_info(target_t *target,
 
 static int arm720t_target_create(struct target_s *target, Jim_Interp *interp)
 {
-	struct arm720t_common_s *arm720t = target_to_arm720(target);
+	struct arm720t_common_s *arm720t = calloc(1, sizeof(*arm720t));
 
+	arm720t->arm7tdmi_common->arm7_9_common.armv4_5_common.is_armv4 = true;
 	return arm720t_init_arch_info(target, arm720t, target->tap);
 }