[POWERPC] macintosh: Use common modalias generation for macio_sysfs

static ssize_t modalias_show (struct device *dev, struct device_attribute *attr,

			      char *buf)

{

	struct of_device *of;

	const char *compat;

	int cplen;

	int length;

	struct of_device *ofdev = to_of_device(dev);

	int len;

	of = &to_macio_device (dev)->ofdev;

	compat = of_get_property(of->node, "compatible", &cplen);

	if (!compat) compat = "", cplen = 1;

	length = sprintf (buf, "of:N%sT%s", of->node->name, of->node->type);

	buf += length;

	while (cplen > 0) {

		int l;

		l = sprintf (buf, "C%s", compat);

		length += l;

		buf += l;

		l = strlen (compat) + 1;

		compat += l;

		cplen -= l;

	}

	length += sprintf(buf, "\n");

	len = of_device_get_modalias(ofdev, buf, PAGE_SIZE);

	return length;

	buf[len] = '\n';

	buf[len+1] = 0;

	return len+1;

}

macio_config_of_attr (name, "%s\n");