riscv: Install dkms by default on the LicheeRV board

So that people without network access can download the package and
install it using a usb drive for example.

Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>

live-build/auto/config

@@ -1108,6 +1108,12 @@ case "$ARCH${SUBARCH:++$SUBARCH}" in
 		BINARY_REMOVE_LINUX=false
 		;;
 	riscv*+*)
+		if [ "${SUBARCH:-}" = "licheerv" ]; then
+			# The wifi driver of the licheerv is an out-of-tree driver packaged
+			# in universe for now, so to ease its installation for those without
+			# network, install its dependencies.
+			add_package install dkms
+		fi
 		# We'll add wpasupplicant to the seeds when we work on RISC-V seeds.
 		add_package install wpasupplicant
 		;;