ring build script is not compatible with solana/cargo-build-bpf

[monkeytomp]

it seems ring-v16.20 is not compatible with cargo-build-bpf (which is used to compile solana programs)

it fails on build script as the solana os/arch passed is not in ASM_TARGETS.

my mac host/arch:

Darwin 
Darwin Kernel Version 21.5.0
arm64

BPF SDK data

BPF SDK: ~/.local/share/solana/install/releases/beta-447c9d4025294937ae125f609c5d8046f7371e92/solana-release/bin/sdk/bpf
cargo-build-bpf child: rustup toolchain list -v
cargo-build-bpf child: cargo +bpf build --target bpfel-unknown-unknown --release