Add support for single link SGMII/QSGMII configuration.
Signed-off-by: Swapnil Jakhade <sjakhade@cadence.com>
Link: https://lore.kernel.org/r/1600327846-9733-11-git-send-email-sjakhade@cadence.comSigned-off-by: Vinod Koul <vkoul@kernel.org>