[coreboot-gerrit] Change in coreboot[master]: payloads: Only show supported payloads in menuconfig

[Philipp Hug (Code Review)]

Philipp Hug has posted comments on this change. ( https://review.coreboot.org/28774 )

Change subject: payloads: Only show supported payloads in menuconfig
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Patch Set 1:

Please cross-check for riscv.
This will only leave ELF and FIT payload.