Replace debug (pll|mmcm) with debug clocks
Replace debug (pll|mmcm) with debug clocks

Only one of these will be active, and output anything, so let's just run
both, under the hood.

mithro/HDMI2USB-litex-firmware,cr1901/HDMI2USB-litex-firmware,mithro/HDMI2USB-litex-firmware,mithro/HDMI2USB-litex-firmware,cr1901/HDMI2USB-litex-firmware,cr1901/HDMI2USB-litex-firmware,cr1901/HDMI2USB-litex-firmware,mithro/HDMI2USB-litex-firmware