YDN_BT_90_3mode_PBswitch_ch_LI：1）关闭3,0 2）修改为分压gpio检测低电，复用numberlock 灯为低电灯 3 ）修改多媒体按键
Review Request #6998 — Created Oct. 8, 2023 and updated
| Information | |
|---|---|
| zhangxianye | |
| Multimode_Keyboard | |
| Reviewers | |
| ruanjianbin, zhangxianye | |
YDN_BT_90_3mode_PBswitch_ch_LI：1）关闭3,0 2）修改为分压gpio检测低电，复用numberlock 灯为低电灯 3 ）修改多媒体按键
