armv8: Add workaround for USB erratum A-050106

USB3.0 Receiver needs to enable fixed equalization
for each of PHY instances in an SOC. This is similar
to erratum A-009007, but this one is for LX2160A,
and the register value is different.

Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>