Added WiFi power management support. Saves 0.3-0.8W at idle.

laptop-mode-tools_1.52/etc/laptop-mode/conf.d/wifi-powermgmt.conf

Index: laptop-mode-tools_1.52/etc/laptop-mode/conf.d/wifi-powermgmt.conf
diff --git a/laptop-mode-tools_1.52/etc/laptop-mode/conf.d/wifi-powermgmt.conf b/laptop-mode-tools_1.52/etc/laptop-mode/conf.d/wifi-powermgmt.conf
new file mode 100644
index 0000000000000000000000000000000000000000..6ec4fecbbf89bf27c38c8031d69ca34496b9423b
--- /dev/null
+++ b/laptop-mode-tools_1.52/etc/laptop-mode/conf.d/wifi-powermgmt.conf
@@ -0,0 +1,23 @@
+#
+# Configuration file for Laptop Mode Tools module wifi-powermgmt.
+#
+# For more information, consult the laptop-mode.conf(8) manual page.
+#
+
+
+###############################################################################
+# WiFi power management settings
+# ------------------------------------
+#
+# If you enable this setting, laptop mode tools will automatically enable the
+# power management for all WiFi devices in the system
+#
+###############################################################################
+
+# Enable debug mode for this module
+# Set to 1 if you want to debug this module
+DEBUG=0
+
+# Control WiFi power management?
+CONTROL_WIFI_POWER=1
+