greybus: remove unused function descriptor fields and change class->function_type

Greybus spec was updated to remove a number of unused function descriptor
fields. In addition, the class field was change to function_type to avoid
confusion with the concept of high-level class drivers.

Signed-off-by: Matt Porter <mporter@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
diff --git a/drivers/staging/greybus/sysfs.c b/drivers/staging/greybus/sysfs.c
index 55dc7b7..1f17388 100644
--- a/drivers/staging/greybus/sysfs.c
+++ b/drivers/staging/greybus/sysfs.c
@@ -31,18 +31,12 @@
 }									\
 static DEVICE_ATTR_RO(function_##field)
 
-greybus_function_attr(number);
 greybus_function_attr(cport);
-greybus_function_attr(class);
-greybus_function_attr(subclass);
-greybus_function_attr(protocol);
+greybus_function_attr(function_type);
 
 static struct attribute *function_attrs[] = {
-	&dev_attr_function_number.attr,
 	&dev_attr_function_cport.attr,
-	&dev_attr_function_class.attr,
-	&dev_attr_function_subclass.attr,
-	&dev_attr_function_protocol.attr,
+	&dev_attr_function_function_type.attr,
 	NULL,
 };
 
@@ -53,11 +47,8 @@
 
 	// FIXME - make this a dynamic structure to "know" if it really is here
 	// or not easier?
-	if (gmod->function.number ||
-	    gmod->function.cport ||
-	    gmod->function.class ||
-	    gmod->function.subclass ||
-	    gmod->function.protocol)
+	if (gmod->function.cport ||
+	    gmod->function.function_type)
 		return a->mode;
 	return 0;
 }