powerpc/math_emu/efp: No need to round if the result is exact
Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>