[PATCH 3/3] drm: arcpgu: Allow some clock deviation in crtc->mode_valid() callback

Currently we expect that clock driver produces the exact same value as we are requiring. There can, and will, be some deviation however so we need to take that into account instead of just rejecting the mode. According to the HDMI spec we have a max of +-0.5% for the pixel clock frequency

[PATCH 3/3] drm: arcpgu: Allow some clock deviation in crtc->mode_valid() callback

Currently we expect that clock driver produces the exact same value as we are requiring. There can, and will, be some deviation however so we need to take that into account instead of just rejecting the mode. According to the HDMI spec we have a max of +-0.5% for the pixel clock frequency