video: s3c-fb: fix possible division by zero in s3c_fb_calc_pixclk
Divider value can be zero and it makes division by zero from debug message in s3c_fb_calc_pixclk; therefore, it should be fixed. Signed-off-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>
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