meson: Set default compress-offload option value to "disabled"

The tinycompress library is not in the package repositories of the
major Linux distributions, so set the default option to "disabled".

meson_options.txt

@@ -280,4 +280,4 @@ option('gsettings',
 option('compress-offload',
        description: 'Enable ALSA Compress-Offload support',
        type: 'feature',
-       value: 'auto')
+       value: 'disabled')