net: hns3: add new 200G link modes for hisilicon device

The hisilicon device now supports a new 200G link interface,
which query from firmware in a new bit. Therefore,
the HCLGE_SUPPORT_200G_R4_BIT capability bit has been added.
The HCLGE_SUPPORT_200G_BIT has been renamed as
HCLGE_SUPPORT_200G_R4_EXT_BIT, and the firmware has
extended support for this mode.

Fixes: ae6f010c ("net: hns3: add support for 200G device")
Signed-off-by: Hao Lan <lanhao@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>