i2c: mpc: Use devm_clk_get_optional()
The peripheral clock is optional and we may get an -EPROBE_DEFER error code which would not be propagated correctly, fix this by using devm_clk_get_optional(). Signed-off-by:Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by:
Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by:
Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by:
Wolfram Sang <wsa@kernel.org>
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