[L1] add some more GND return vias for diff pairs crossing layers
-
MTG_CLK_STAT_P/N vias near ZU7 are missing GND return vias close to them -
(X: 188mm; Y: 61mm) missing GND return vias close to some _PE_TX_P/N vias (for slot 4, 5, 6) -
Some LVDS lines are changing internal layers and reference planes without having ground vias on the vicinity. (Eg SLOT4_LVDS9_N & P change from L7 to L12 without GND vias) -
Some LVDS lines have only one via while changing reference planes. Should be equalization in via count. (Eg SLOT4_LVDS_7_P has a via. SLOT4_LVDS_7_N does not)