[PATCH 1/1] amdgcn/fmin: Fix typos that reduced precision

Not sure how these sneaked in.
Fixes fminD and few other tests(fractD, cosD) on carrizo
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>

Yeah, that was obviously wrong...

Reviewed-by: Aaron Watry <awatry@gmail.com>