WifiMetrics: Rename MapEntryInt32Int32 to Int32Count

Rename MapEntryInt32Int32 to Int32Count to be more specific to the actual use
case.

Bug: 112029045
Test: frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Change-Id: Iaa3011bfa6ee2bdce32515ab2ebfeea9420a2175
4 files changed