configs/rockpro64_defconfig: add missing depenencies, extend rootfs size

U-Boot requires pylibfdt, pyelftools and openssl so let's enable U-Boot
corresponding BR2_TARGET_UBOOT_NEEDS_*.

Rootfs is not big enough because of Linux modules size so let's extend it
to 120MB.

Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/5551322041

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

configs/rockpro64_defconfig

@@ -22,6 +22,9 @@ BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2023.07"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="rockpro64-rk3399"
 BR2_TARGET_UBOOT_NEEDS_DTC=y
 BR2_TARGET_UBOOT_NEEDS_PYTHON3=y
+BR2_TARGET_UBOOT_NEEDS_PYLIBFDT=y
+BR2_TARGET_UBOOT_NEEDS_PYELFTOOLS=y
+BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
 BR2_TARGET_UBOOT_NEEDS_ATF_BL31=y
 BR2_TARGET_UBOOT_NEEDS_ATF_BL31_ELF=y
 BR2_TARGET_UBOOT_FORMAT_CUSTOM=y
@@ -43,6 +46,7 @@ BR2_TARGET_GENERIC_HOSTNAME="rockpro64"
 BR2_TARGET_GENERIC_ISSUE="Welcome to ROCKPRO64"
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
+BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
 BR2_PACKAGE_HOST_DOSFSTOOLS=y
 BR2_PACKAGE_HOST_GENIMAGE=y
 BR2_PACKAGE_HOST_MTOOLS=y