i2c: designware_i2c: Add a little more debugging
Add debugging for a few more values and also use log to show return values when something goes wrong. This makes it easier to see the root cause. Signed-off-by: NSimon Glass <sjg@chromium.org> Reviewed-by: NBin Meng <bmeng.cn@gmail.com> Reviewed-by: NWolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: NHeiko Schocher <hs@denx.de>
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