configs/pc_x86_64_efi: needs host-openssl to build Linux

Fixes:

  https://gitlab.com/buildroot.org/buildroot/-/jobs/125631916

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

configs/pc_x86_64_efi_defconfig

@@ -35,6 +35,7 @@ BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.10"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/pc/linux.config"
 BR2_LINUX_KERNEL_INSTALL_TARGET=y
+BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
 
 # Firmware
 BR2_PACKAGE_LINUX_FIRMWARE=y