Change in coreboot[master]: arch/x86: Add support for catching null dereferences through debug regs

[Angel Pons (Code Review)]

Attention is currently required from: Robert Zieba, Raul Rangel, Nico Huber, Tim Wawrzynczak, Paul Menzel, Arthur Heymans, Kyösti Mälkki, Karthik Ramasubramanian.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/63657 )

Change subject: arch/x86: Add support for catching null dereferences through debug regs
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Patch Set 7:

(1 comment)

File src/arch/x86/breakpoint.c:

https://review.coreboot.org/c/coreboot/+/63657/comment/c6795a2c_db72055c 
PS7, Line 41:  = {0, 0, 0, 0}
> No need, this happens automatically.

If you still want to keep the initializer, you can simply use `{ 0 }` regardless of how many elements the array has.