don't adjust core clk conversions for 1/2 and 1/4 rate channels; the mac runs at full speed so doing this breaks conversion for ifs parameters
don't adjust core clk conversions for 1/2 and 1/4 rate channels; the
mac runs at full speed so doing this breaks conversion for ifs parameters

Submitted by:	Felix Fietkau <nbd@openwrt.org>

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