dma: add channel.h/cc into CMakeLists.txt
dma: add channel.h/cc into CMakeLists.txt

StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion