ir3: nir_op_f2f16 should round to even
cat1 instructions round to zero by default. When fp16 is enabled this will fix: dEQP-VK.spirv_assembly.instruction.graphics.float_controls.fp16.input_args.rounding_rte_conv_from_fp32_nostorage_frag dEQP-VK.spirv_assembly.instruction.graphics.float_controls.fp16.input_args.rounding_rte_conv_from_fp32_nostorage_vert dEQP-VK.spirv_assembly.instruction.compute.float_controls.fp16.input_args.rounding_rte_conv_from_fp32_nostorage Signed-off-by:Danylo Piliaiev <dpiliaiev@igalia.com> Part-of: <mesa/mesa!9840>