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Force loading reset-raspberrypi.ko to enable boot from USB MSD for 5.10 kernel (Closes: #977694)

Ryutaroh Matsumotorequested to merge
ryutaroh/raspi-firmware:bug-977694 into master

With Debian kernel 5.9.x, booting RPi4 from USB MSD was possible without any hassle. But Debian 5.10 kernel stopped booting from USB-MSD. It turned out that reset-raspberrypi.ko is absolutely necessary to recognize USB devices. To allow boot from USB MSD, either

  • Rebuild kernel with CONFIG_RESET_RASPBERRYPI=y in .config,
  • or loading reset-raspberrypi.ko is necessary. Debian linux-image-arm64/sid package already has reset-raspberrypi.ko. This MR forces the initramfs to load reset-raspberrypi.ko. Related discussion can be found at kernel-team/linux!315 (closed)

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