Mark oc-dev-plus-aosp OPR1 as REL

It contains all of oc-dev, which has OPR1 marked as REL, so we should be
using API 26 instead of 'O'.

Test: Check PLATFORM_VERSION_CODENAME / PLATFORM_SDK_VERSION
Change-Id: I0e8f3b42b8ac60422f0a8b044de45ba03b0bcfcf
Merged-In: I036cc43c1f2aa5317ae1131dc31a1f96caa5081f
1 file changed