Decrease Vol Panel Transparency

As I was kindly told at dinner...160 is aparently too transparent. Bump to 208,
 50% of difference of previous value and 255.

Change-Id: I938d0e37b5807c83d25a35e2fb08fcdfb02db18f
Merge "Decrease Vol Panel Transparency" into cm-11.0
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_frameworks_base into cm-11.0_DialerLookup