PBSwitch_3mode_2ch_M6PB:修复由于配置问题，导致eeprom脚被修改，从而无法切换模式问题;

Review Request #5517 — Created Dec. 15, 2022 and updated Dec. 15, 2022, 5:23 p.m. — Latest diff uploaded Dec. 15, 2022, 5:23 p.m.