Compression acceleration support

configname: CONFIG_CRYPTO_DEV_NX_COMPRESS

Linux Kernel Configuration
└─>Cryptographic API
└─>Hardware crypto devices
└─>Compression acceleration support
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Support for PowerPC Nest (NX) compression acceleration. This
module supports acceleration for compressing memory with the 842
algorithm using the cryptographic API. One of the platform
drivers must be selected also. If you choose 'M' here, this
module will be called nx_compress.