NVHOST_VI_IOCTL_ENABLE_TPG          enable TPG
usage:
       uint enable;
       ioctl(fd, NVHOST_VI_IOCTL_ENABLE_TPG, &enable);

     inputs:

     Enable/disable TPG

     outputs:      none

     error return:
     EINVAL      Couldn't get clocks value

NVHOST_VI_IOCTL_SET_EMC_INFO          set memory controller bandwith info
usage:
     uint vi_bw;
     ioctl(fd, NVHOST_VI_IOCTL_SET_EMC_INFO , &vi_bw);

     inputs:

     Provide EMC bandwith info

     outputs:      none

     error return:
     ENOMEM      Failed to set la for this bandwith