This patch updates the default uniphy mode to SGMII
for the qca808x ports. If suppose, the phy is capable
of supporting 2.5G, then it will reconfigure the
uniphy mode to SGMII_PLUS at that time based on the
link speed detected.
Change-Id: I56692b19536e71cbcf3a4c31d32ecb29866c5fdc
Signed-off-by: Selvam Sathappan Periakaruppan <quic_speriaka@quicinc.com>