[coreboot-gerrit] Change in coreboot[master]: mb/google/puff: Implement cse_board_reset() strong symbol

[Edward O'Callaghan (Code Review)]

Edward O'Callaghan has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/44454 )

Change subject: mb/google/puff: Implement cse_board_reset() strong symbol
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Patch Set 2: Code-Review-2

Will squash in https://review.coreboot.org/c/coreboot/+/44278/ here as well once the tpm refactor lands.