Enable CtsIcu4cTestCases on secondary ABI

Bug: 169176969
Test: atest CtsIcu4cTestCases -- --abi x86_64
Test: atest CtsIcu4cTestCases -- --abi x86
Test: OUT_DIR=ndk_out build/soong/scripts/build-ndk-prebuilts.sh to build NDK

Change-Id: Ic0540788c0d273f289184a1f7cc1213becf64e2b
2 files changed