Realtek switch SoC docs

cypress feature OAM

Registers

Offset Name Summary
OAM
04d0 OAM_GLB_DYING_GASP_CTRL
04d4 DYING_GASP_POLARITY_CTRL
2100 OAM_CTRL
2104 OAM_PORT_ACT_CTRL
6100 OAM_PORT_DYING_GASP_CTRL