device-pine64-rockpro64: update u-boot image name
Adjust to change in Alpine that moved rockchip to single image: https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/51827
Fix for:
ERROR: The following firmware binary does not exist in the rootfs_pine64-rockpro64 chroot: /usr/share/u-boot/rockpro64-rk3399/idbloader.img
with this patch:
(003112) [20:46:00] Embed firmware u-boot/rockpro64-rk3399/u-boot-rockchip.bin in the SD card image at offset 32 with step size 1024
(003112) [20:46:00] (native) % dd if=/mnt/rootfs_pine64-rockpro64/usr/share/u-boot/rockpro64-rk3399/u-boot-rockchip.bin of=/dev/install bs=1024 seek=32
9223+1 records in
9223+1 records out
9444864 bytes (9.0MB) copied, 0.162170 seconds, 55.5MB/s