riscv: install u-boot-starfive on VisionFive 2 preinstalled image

The StarFive VisionFive 2 board can boot from SPI flash or SD-card.
Install U-Boot to the SD card.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

live-build/ubuntu-cpc/hooks.d/base/disk-image-uefi-non-cloud.binary

@@ -354,6 +354,13 @@ EOF
                         # the model value is wrong and we need to use /etc/flash-kernel/machine instead.
                         # This explains why we install flash-kernel here.
                         chroot mountpoint bash -c "echo 'StarFive VisionFive 2 v1.3B' > /etc/flash-kernel/machine"
+                        chroot mountpoint apt-get install -qqy u-boot-starfive
+                        # U-Boot SPL
+                        loader1="${loop_device}p13"
+                        # Main U-Boot
+                        loader2="${loop_device}p2"
+                        dd if=mountpoint/usr/lib/u-boot/starfive_visionfive2/u-boot-spl.bin.normal.out of=$loader1
+                        dd if=mountpoint/usr/lib/u-boot/starfive_visionfive2/u-boot.itb of=$loader2
                         ;;
 		    unmatched)
                         cp ${my_d}/riscv64/grub/90_watchdog-thresh.cfg mountpoint/etc/default/grub.d/