net: dw_eth_qos: Add missing \n in error messages.

Missing line-feeds in error messages lead to output like:

    phy_startup() failed: -110FAILED: -110=>

Output like the following is much easier to read:

    phy_startup() failed: -110
    FAILED: -110
    =>

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
1 file changed