Feature: GFX clock

From a ryzenadj's unofficial version by FlyGoat:

image
RyzenAdj_with_gfx.zip

Help says:

    -w, --max-gfxclk-frequency=<u32>  Maximum GFX Clock Frequency (MHz)
    -x, --min-gfxclk-frequency=<u32>  Minimum GFX Clock Frequency (MHz)

Usage saw from discord: range from 500 to 1200

Edited by Quentin “Storm1er” Decaunes