net: ravb: Support fixed PHY in R-Car

net: ravb: Support fixed PHY in R-Car

Calling old U-Boot API doesn't allow to use fixed PHY.
Searching by mask is the part of new function, after
scanning FDT for a fixed PHY definition

Fixes: 53f6244f2a1 ("net: ravb: Detect PHY correctly")
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Mikhail Lappo <mikhail.lappo@esrlabs.com>
Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
[Hai Pham: Drop phy_connect_dev since it's called in phy_connect]
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
[Marek: Use mask -1 instead of 0 to reinstate the search behavior
        over all PHY addresses. Add Fixes tag, sort the tag list.]