Provide the rise and fall times for the i2c buses and let the
library perform the necessary calculations for the i2c
controller registers instead of manually tuning the values.
BUG=chrome-os-partner:58889,chrome-os-partner:59565
Change-Id: I0c84658471d90309cdbb850e3128ae01780633af
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17397
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
a20e983236