[PATCH 1/2 V3] powerpc/85xx: Add P1024rdb dts support

[Tang Yuantian-B29983]

> I'm curious how fsl_pq_mdio_probe returns successfully when probing the
> phys on the first pass (mdio at 24000).  I don't have a P1024 to test with,
> but I believe it has the same ETSEC configuration as the P1010 that I
> work with.
> 
> Inside the fsl_pq_mdio_probe routine (fsl_pq_mdio.c), a successful search
> of a tbi child node is required with a tbi->type of "tby-phy".
> If it doesn't find this node, the probe routine will return an error of
> EBUSY.  The logic from the routine is provided below:
> 

It is right if you work on kernel 3.3 or later version.
Probably the .probe function needs to be modified, not this dts.
I am working on it and resend this patch, if needed.

Regards,
Yuantian