fix(drivers/marvell/comphy-3700): fix comment about COMPHY status register

Fix comment about COMPHY status register. PCIe/GbE0 PHY is on lane 1,
while USB3/GbE1 on lane 0.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Change-Id: I24734a61727d56f6eab2ed1c366d7a1810dbe19d
1 file changed