Enable the LPDDR4x Memory (Ti180 J484 Board)

For the Titanium Ti180 J484 Development Board, the SoC design uses LPDDR4x settings to drive the external memory. To enable it, change the jumpers on PT12 and PT15 to connect pins 1 and 2 to provide 0.6 V to VDDQ and VDDQ_PHY.