Add minApiLevel 30 argument to stats-log-api-gen

Add minApiLevel 30 argument to stats-log-api-gen to maintain backwards
compatibility with R in the next Android release.

Bug: 160938178
Test: m
Test: inspect generated WifiStatsLog
Change-Id: I60550d839f3664b69b07b59d13d74b93fd1ba4d3
1 file changed