Fix testSocketKeepaliveLimitTelephony on R

DEVICE_INITIAL_SDK_INT does not exist in older SDKs: use the pre-rename
field, FIRST_SDK_INT instead.

Fixes: 185731191
Test: atest ConnectivityManagerTest#testSocketKeepaliveLimitTelephony
Change-Id: I1fbc0f714d539a664c053cb9cf1f86c3e651c5a2
Merged-In: I1fbc0f714d539a664c053cb9cf1f86c3e651c5a2
1 file changed