dmaengine: idxd: Set traffic class values in GRPCFG on DSA 2.0

dmaengine: idxd: Set traffic class values in GRPCFG on DSA 2.0

[ Upstream commit 9735bde36487da43d3c3fc910df49639f72decbf ]

On DSA/IAX 1.0, TC-A and TC-B in GRPCFG are set as 1 to have best
performance and cannot be changed through sysfs knobs unless override
option is given.

The same values should be set on DSA 2.0 as well.

Fixes: ea7c8f598c32 ("dmaengine: idxd: restore traffic class defaults after wq reset")
Fixes: ade8a86b512c ("dmaengine: idxd: Set defaults for GRPCFG traffic class")
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20221209172141.562648-1-fenghua.yu@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>