QIB DCA support

configname: CONFIG_INFINIBAND_QIB_DCA

Linux Kernel Configuration
└─>Device Drivers
└─>InfiniBand support
└─>QIB DCA support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Setting this enables DCA support on some Intel chip sets
with the iba7322 HCA.