i2c: designware: Allow sending restart conditions
Allow sending restart conditions upon direction change as this is required by some chips. Signed-off-by: NMarek Vasut <marex@denx.de> Cc: Stefan Roese <sr@denx.de> Cc: Alexey Brodkin <abrodkin@synopsys.com> Cc: Heiko Schocher <hs@denx.de> Reviewed-by: NHeiko Schocher <hs@denxx.de>
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