[S] Change in coreboot[main]: Update opensbi submodule to upstream master branch

[Maximilian Brune (Code Review)]

Attention is currently required from: Philipp Hug, ron minnich.

Maximilian Brune has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81543?usp=email )

Change subject: Update opensbi submodule to upstream master branch
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Patch Set 6:

(1 comment)

File src/mainboard/emulation/qemu-riscv/memlayout.ld:

https://review.coreboot.org/c/coreboot/+/81543/comment/399b3fa4_a0a30b5f :
PS6, Line 7: #define BOOTBLOCKSIZE 128K
           : #define OPENSBISIZE 512K
           : #define ROMSTAGESIZE 256K
           : #define RAMSTAGESIZE 2M
           : #define CONSOLESIZE 8K
           : #define FMAPSIZE 2K
           : #define MCACHESIZE 10K
           : #define STACKSIZE 4M
           : 
IMO that looks less readable than before.
It also doesn't match the style we have for all the other linker scripts on RISCV and aarch64.