[PATCH v2] riscv: fix typos in comments/code - CC Conor

[Sean Chang]

Hi Conor,

Thanks for quick feedback on v1!

Fixed your comments:
- elf.h: coorespends → corresponds  
- processor.h: requries → is required

v2 here: https://lore.kernel.org/linux-riscv/20260211175429.94329-1-seanwascoding@gmail.com/

Please review!

Thanks,
Sean
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