i2c: designware_i2c: Add support for fast-plus speed
Fast-plus runs at 1MHz and is used by some devices. Add support for this.
Signed-off-by: NSimon Glass <sjg@chromium.org>
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Fast-plus runs at 1MHz and is used by some devices. Add support for this.
Signed-off-by: NSimon Glass <sjg@chromium.org>