[bluez/bluez] dc3162: adapter: Add configurable default LE PHYs

[Tarjei <noreply@github.com>]

  Branch: refs/heads/1100262
  Home:   https://github.com/bluez/bluez
  Commit: dc316288b2356b3b2285ef20851b4aa4a112764f
      https://github.com/bluez/bluez/commit/dc316288b2356b3b2285ef20851b4aa4a112764f
  Author: Tarjei Bitustøyl <tarjeib@gmail.com>
  Date:   2026-05-25 (Mon, 25 May 2026)

  Changed paths:
    M src/adapter.c
    M src/btd.h
    M src/main.c
    M src/main.conf

  Log Message:
  -----------
  adapter: Add configurable default LE PHYs

Some controllers mis-handle LE procedures on specific PHYs with
certain peers. On an Intel AX210-class controller, connecting to a
Frostbay BLE device can fail during early ATT/GATT setup unless the
adapter is limited to LE 1M TX/RX.

Add an opt-in [LE] DefaultPHYs setting to bluetoothd and apply it at
adapter startup using MGMT_OP_GET/SET_PHY_CONFIGURATION while
preserving non-configurable PHY bits.

This provides a generic, adapter-wide workaround for controller-
specific LE PHY interoperability problems affecting scanning and
connection establishment, without adding device-specific quirks.

v2:
- Check MGMT_SETTING_PHY_CONFIGURATION before sending PHY
  configuration commands.



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