configs/chiliboard: uboot needs openssl

Fixes uboot build errors:

  In file included from tools/imagetool.h:24,
                   from tools/aisimage.c:7:
  include/image.h:1383:12: fatal error: openssl/evp.h: No such file or directory
   1383 | #  include <openssl/evp.h>
        |

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

configs/grinn_chiliboard_defconfig

@@ -18,6 +18,7 @@ BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2023.01"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="chiliboard"
+BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
 BR2_TARGET_UBOOT_FORMAT_IMG=y
 BR2_TARGET_UBOOT_FORMAT_CUSTOM=y
 BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME="spl/u-boot-spl.bin"