PM QoS: Minor clean-ups

 - Misc fixes to improve code readability:
  * rename struct pm_qos_request_list to struct pm_qos_request,
  * rename pm_qos_req parameter to req in internal code,
    consistenly use req in the API parameters,
  * update the in-kernel API callers to the new parameters names,
  * rename of fields names (requests, list, node, constraints)

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Acked-by: markgross <markgross@thegnar.org>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index f72ac6b..f38ab5b 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -964,7 +964,7 @@
 	 */
 	char			name[IFNAMSIZ];
 
-	struct pm_qos_request_list pm_qos_req;
+	struct pm_qos_request	pm_qos_req;
 
 	/* device name hash chain */
 	struct hlist_node	name_hlist;