Merge https://source.denx.de/u-boot/custodians/u-boot-riscv

+ Implement OpenSBI DBCN extension for early debug console
+ Fixes for VisionFive2 board
      + Fix timer missing
      + Fix L2 LIM issue
      + Enable PCIE auto enumeration to support USB and NVMe by default
+ Set eth0 mac address properly
+ Add __noreturn attribute to spl_invoke_opensbi