krabby: Add I2C bus labels to DTS
krabby: Add I2C bus labels to DTS

Best practice to override the label for I2C bus from schematic.

BUG=b:210129104
TEST=Unit tests
BRANCH=NONE
Signed-off-by: Al Semjonovs <c3a2ecb550cad1e7d5a943ca6241377f7b43ffc4@google.com>

Change-Id: I04b525483fc40a198aefd9c483672ef4eb02c9d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3354944
Auto-Submit: Al Semjonovs <c3a2ecb550cad1e7d5a943ca6241377f7b43ffc4@google.com>
Reviewed-by: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@chromium.org>
Reviewed-by: Eric Yilun Lin <2f2733c7206ea2b76bd2db1905cc5e8a75841c48@google.com>
Tested-by: Al Semjonovs <c3a2ecb550cad1e7d5a943ca6241377f7b43ffc4@google.com>
Commit-Queue: Al Semjonovs <c3a2ecb550cad1e7d5a943ca6241377f7b43ffc4@google.com>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec