HW Decompression and CIS Selection

The HW_DECOMPRESS_CIS attribute can be used to selectively set which CIS should use hardware accelerated decompression. An application which is going to be decompressing multiple CIS should set this attribute to -1 before any XIL decompress molecules are performed. This keeps a decompress molecule on a CIS that you do not want to hardware decode from attaching itself to the hardware. Before performing a decompress molecule on the CIS that you do want to use hardware decompression on, set the HW_DECOMPRESS_CIS attribute.