mlxsw: spectrum: Rename MLXSW_REG_QEEC_HIERARCY_* enumerators

These enums want to be named MLXSW_REG_QEEC_HIERARCHY_, but due to a typo
lack the second H. That is confusing and complicates searching.

But actually the enumerators should be named _HR_, because that is how
their enum type is called. So rename them as appropriate.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>