The issue is resolved by downloading the latest Android NDK and giving Clang compiler for cross-compilation.
tvmc compile --target “llvm -device=arm_cpu -mtriple=aarch64-linux-android” --cross-compiler ‘$ANDROID_NDK_PATH/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android30-clang’ -o mobilenet_v2_pytorch_arm64_cpu.tar models/mobilenet_v2_pytorch.onnx