Addition of HW Revision to Wifi Metrics

Test:
adb shell dumpsys wifi | grep "Hardware Version"
Hardware Version: EVT2.0

BUG:112541087
Change-Id: I05146d74f9e3f0fefbce5b71f2da8cbd251c4d86
Merged-In: I05146d74f9e3f0fefbce5b71f2da8cbd251c4d86
1 file changed