Realtek switch SoC docs

cypress feature CONGESTION_AVOIDANCE

Registers

Offset Name Summary
CONGESTION_AVOIDANCE
3eb4 WRED_DROP_CNTR_PIDX
3eb8 WRED_DROP_CNTR_CIDX
3ebc WRED_DROP_CNTR
3ec4 WRED_CNTR_RST
6080 WRED_GLB_CTRL
6084 WRED_PORT_THR_CTRL
6090 WRED_QUEUE_THR_CTRL
60f0 SC_P_CTRL
804c SC_P_EN