[S] Change in coreboot[main]: arch/riscv/pmp: Add print macro

[Maximilian Brune (Code Review)]

Attention is currently required from: Arthur Heymans, Philipp Hug, Ron Minnich.

Maximilian Brune has posted comments on this change by Maximilian Brune. ( https://review.coreboot.org/c/coreboot/+/83056?usp=email )

Change subject: arch/riscv/pmp: Add print macro
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Patch Set 2:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/83056/comment/9960e47c_f5eb6d76?usp... :
PS2, Line 9: This adds a printk macro in the PMP code to avoid all harts writing onto
           : the serial which causes crappy/broken output.
           :
> What is the problem exactly? Are spinlocks broken?

The problem is that currently all harts/cores are printing that information on the console. But we only need it to be printed by one of them (at least in my opinion since all harts/cores are configured the same). So instead of synchronizing it and let it be printed by all of them I chose to only let it be printed by the working hart (aka BSP).