configs/wandboard: uboot needs openssl

Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/6609466641

Signed-off-by: Julien Olivain <ju.o@free.fr>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Romain Naour <romain.naour@smile.fr>

configs/wandboard_defconfig

@@ -26,6 +26,7 @@ BR2_TARGET_UBOOT_CUSTOM_VERSION=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2024.01"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="wandboard"
 BR2_TARGET_UBOOT_FORMAT_IMG=y
+BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
 BR2_TARGET_UBOOT_SPL=y
 BR2_TARGET_UBOOT_SPL_NAME="SPL"