configs/solidrun_clearfog_gt_8k: bump BSP components

configs/solidrun_clearfog_gt_8k: bump BSP components

Switch to upstream ATF of recent version to fix build with recently
updated mv-ddr. The vendor does not provide public access to newer ATF
versions anymore.

Bump U-Boot and kernel to fix dtc build on hosts with gcc 10.

Increase rootfs size. The default 60MB is not enough.

Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/948622614

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>