Include a realistic wifi.scan mA value.

With a wakelock on, and the screen off, I measured the current delta
when a passive wifi scan is triggered. It is around 100mA.

Bug: 6642581
Change-Id: I8f8e8c341502503de068430460200dfd0b489809
diff --git a/overlay/frameworks/base/core/res/res/xml/power_profile.xml b/overlay/frameworks/base/core/res/res/xml/power_profile.xml
index 8f54426..d24e6db 100644
--- a/overlay/frameworks/base/core/res/res/xml/power_profile.xml
+++ b/overlay/frameworks/base/core/res/res/xml/power_profile.xml
@@ -27,7 +27,7 @@
   <item name="screen.full">160</item> <!-- 360 max on calendar -->
   <item name="wifi.on">1</item>
   <item name="wifi.active">150</item>
-  <item name="wifi.scan">200</item>
+  <item name="wifi.scan">100</item>
   <item name="dsp.audio">150</item>
   <item name="dsp.video">200</item>
   <item name="radio.active">260</item>