RTL8125BG firmware:
- Add rtl_nic/rtl8125b-2.fw (primary firmware for the onboard 2.5GbE)
- Add sibling rtl8125 firmware files (a-3/d-1/d-2/bp-2/b-1/cp-1/k-1)
for broad Realtek Ethernet chip compatibility
- These ship to /vendor/firmware/rtl_nic/ via the existing find-based
PRODUCT_COPY_FILES rule in tart-vendor.mk
MT7961 cleanup:
- Remove WIFI_RAM_CODE_MT7961_1a.bin (wrong firmware — for MT7920, not MT7961)
- Remove WIFI_MT7961_patch_mcu_1a_2_hdr.bin (same reason)
The correct _1 variants are provided by the linux_firmware_mt7921 Soong
module (listed in PRODUCT_PACKAGES in tart-vendor.mk).
