Braswell: add code to support customization of I2C data hold time

The I2C data hold time can be vary on different boards/devices.
So, it needs to be customized by boards/devices

TEST=compile ok and check IC_SDA_HOLD is changed if the hold time
     is defined in onboard.h

Original-Reviewed-on: https://chromium-review.googlesource.com/308623
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>

Change-Id: I66c799de400670916cebbcb529d4f59d5b0f081b
Signed-off-by: Kane Chen <kane.chen@intel.com>
Reviewed-on: https://review.coreboot.org/12740
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

0 files changed, 0 insertions, 0 deletions