community/*: add loongarch64 support
- openblas: fix build on loongarch64
- webrtc-audio-processing-1 and webrtc-audio-processing: add loongarch support, patch form:
https://gitlab.freedesktop.org/pulseaudio/webrtc-audio-processing/-/merge_requests/39
https://gitlab.freedesktop.org/pulseaudio/webrtc-audio-processing/-/merge_requests/39