Detect the decompression method based on magic number

Detect the decompression method based on magic number.

ASM1051 and older ASM1053 devices have the same usb-id, and UAS is broken on the ASM1051, use the number of streams to differentiate. New ASM1053-s also support 32 streams, but have a different prod-id.

The maximum number of CD-ROM drives we ll detect.