This adds support for the Radxa Rock Pi 4 board which is based on
RK3399. The u-boot outputs from the introduced build are suitable to
build a generic image for the Rock Pi 4 by setting the following in a
custom build of $nixpkgs/nixos/modules/installer/cd-dvd/sd-image-aarch64.nix:
```
sdImage.postBuildCommands = ''
dd if=${pkgs.ubootRockPi4}/idbloader.img of=$img seek=64 conv=notrunc
dd if=${pkgs.ubootROckPi4}/u-boot.itb of=$img seek=16384 conv=notrunc
'';
```
This patch changes maintainership for this package from lschuermann to
matthiasbeyer.
Leon has informed me in a private conversation that he has too little
time to take care of the packages, so I will (maybe only temporarly,
maybe not) take maintainership for it.
Suggested-by: Leon Schuermann <leon@is.currently.online>
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
Builds currently fail with `ar` trying to operate on what are clearly
two paths concatenated together. It stems from a backward-incompatible
change in Make:
> Previously appending using '+=' to an empty variable would result in
> a value starting with a space. Now the initial space is only added
> if the variable already contains some value. Similarly, appending an
> empty string does not add a trailing space.
This issue was first reported on the MAME repository proper
(https://github.com/mamedev/mame/issues/6248), and affects libretro's
2016 snapshot as well. A fix that is reported to work with previous
versions of Make was upstreamed to:
- GENie, the build system: https://github.com/bkaradzic/GENie/pull/493
- MAME: https://github.com/mamedev/mame/pull/6262
- libretro: https://github.com/libretro/mame2016-libretro/pull/47
The fetched patch comes from the last of these.
This reverts commit c778945806.
I believe this is exactly what brings the staging branch into
the right shape after the last merge from master (through staging-next);
otherwise part of staging changes would be lost
(due to being already reachable from master but reverted).
