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

llvm-svn: 330198
GitOrigin-RevId: 8fa100dfe3c36687f3ab09804657fdf4fa946bdf
1 file changed