configs/ci20: U-Boot needs host-openssl

Very likely since the bump of U-Boot from 2020.07 to 2024.01 in commit
dedb7dc6d6543d5ce16ac73f927e0a33806075e1, U-Boot needs host-openssl,
so let's add the necessary dependency.

With this change ci20_defconfig builds again:

  https://gitlab.com/tpetazzoni/buildroot/-/jobs/11054480107

Fixes:

  https://gitlab.com/buildroot.org/buildroot/-/jobs/11012273114

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

configs/ci20_defconfig

@@ -18,6 +18,7 @@ BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2024.01"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="ci20_mmc"
+BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
 BR2_TARGET_UBOOT_FORMAT_IMG=y
 BR2_TARGET_UBOOT_SPL=y
 BR2_PACKAGE_HOST_GENIMAGE=y