r600/fmax: Flush denormals before calling builtin.

Same reason as amdgcn.
Fixes fmax, maxmag CTS on turks.
Reviewer: Tom Stellard <tstellar@redhat.com>
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>

llvm-svn: 334227
GitOrigin-RevId: e23c0ec0863870bc4823c731091f478c4bc781cf
2 files changed