i2c: designware: fix i2c_dw_clk_rate() return size to be u32
Make i2c_dw_clk_rate() to return u32 instead of unsigned long, as the function return the value of get_clk_rate_khz() which returns u32. Fixes: b33af11d ("i2c: designware: Do not require clock when SSCN and FFCN are provided") Signed-off-by: Hanna Hawa <hhhawa@amazon.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
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