soc/mediatek: Update capitalization of coreboot

coreboot was spelled with a capital C in these files.  We don't run the
linters on these files, but since they're part of a coreboot-owned repo,
let's fix them.

(cherry picked from commit ecbe941a980a30a513dadd64de8a04decd0de93c)

Original-Signed-off-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Original-Change-Id: Icb1d6ee12057d552938496d198a17b6c8bfd93e8
GitOrigin-RevId: ecbe941a980a30a513dadd64de8a04decd0de93c
Change-Id: I90495db2af98e1dff2118e117d8833a6c210d3f1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/blobs/+/3963742
Commit-Queue: Reka Norman <rekanorman@chromium.org>
Reviewed-by: Reka Norman <rekanorman@chromium.org>
Tested-by: CopyBot Service Account <copybot.service@gmail.com>
3 files changed