cuda: add missing default for cfg_pin_sysmem
cuda: add missing default for cfg_pin_sysmem

StanfordLegion/legion,chuckatkins/legion,sdalton1/legion,StanfordLegion/legion,sdalton1/legion,StanfordLegion/legion,chuckatkins/legion,chuckatkins/legion,sdalton1/legion,chuckatkins/legion,StanfordLegion/legion,sdalton1/legion,chuckatkins/legion,StanfordLegion/legion,chuckatkins/legion,StanfordLegion/legion,StanfordLegion/legion,chuckatkins/legion,StanfordLegion/legion,sdalton1/legion,sdalton1/legion