mediatek MT7921: update bluetooth firmware to 20251223091725

Josh Boyerrequested to merge
mt7921 into main

Update binary firmware for MT7921 BT devices.

File: mediatek/BT_RAM_CODE_MT7961_1_2_hdr.bin Version: 20251223091725

Signed-off-by: Chris Lu chris.lu@mediatek.com Signed-off-by: Josh Boyer jwboyer@kernel.org

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