linux-lenovo-21bx: upgrade to 6.7
kconfig changes:
- Most are due to running 'pmb kconfig migrate'
- Enable USB_F_FS
- Build ath11k as a module + enable debug, to help with debugging pma#2361
- Enable support for BT BR/EDR stuff (like HFP)
- Enable CRYPTO_MD4 for EAP_MSCHAPv2