tall-allwinner64-u-boot): Update to use a single file to install.

Age	Commit message (Expand)	Author
Vagrant Cascadian
2021-02-08	gnu: u-boot-puma-rk3399: Switch to using arm-trusted-firmware-rk3399....* gnu/packages/bootloaders.scm (u-boot-puma-rk3399)[native-inputs]: Add arm-trusted-firmware-rk3399. Remove arm-trusted-firmware-puma-rk3399 and rk3399-cortex-m0. * gnu/packages/firmware.scm (arm-trusted-firmware-puma-rk3399, rk3399-cortex-m0): Remove obsolete variables. * gnu/bootloader/u-boot.scm (install-puma-rk3399-u-boot): Install idbloader.img.	Vagrant Cascadian