net/mlx5: Verify support for scheduling element and TSAR type

[ Upstream commit 861cd9b9 ]

Before creating a scheduling element in a NIC or E-Switch scheduler,
ensure that the requested element type is supported. If the element is
of type Transmit Scheduling Arbiter (TSAR), also verify that the
specific TSAR type is supported.

Fixes: 214baf22 ("net/mlx5e: Support HTB offload")
Fixes: 85c5f7c9 ("net/mlx5: E-switch, Create QoS on demand")
Fixes: 0fe132ea ("net/mlx5: E-switch, Allow to add vports to rate groups")
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>