travis: Adding iceprog to travis.
travis: Adding iceprog to travis.

timvideos/conda-hdmi2usb-packages,litex-hub/litex-conda-eda,timvideos/conda-hdmi2usb-packages,timvideos/conda-misoc-lm32,timvideos/conda-misoc-lm32,litex-hub/litex-conda-compilers,litex-hub/litex-conda-prog