The COL and CRS pins of the Ethernet PHY is not connected on the board
at all, but assigned dummy positions in the platform definition, which
leads to Vivado warning when building.
Remove these pins from the platform definition.
Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
The boards are in fact from a vendor called 成都赛特凌威科技有限公司,
and their English registered trademark (used on the banner of their
Taobao store) is Sitlinv, which sounds like 赛特凌威.
Use this vendor name instead of where it's bought.
Signed-off-by: Icenowy Zheng <uwu@icenowy.me>