[POWERPC] Revert "[POWERPC] Add 'mdio' to bus scan id list for platforms with QE UEC"

This reverts commit 3baee955.

That commit was a mistake from the start; I added mdio type to the
bus scan list early on in my ucc_geth migrate to phylib development,
which is just pure wrong (the ucc_geth_mii driver creates the mii
bus and the PHY layer handles PHY enumeration without translation).

This follows on from commit 77926826:

 Revert "[POWERPC] Don't complain if size-cells == 0 in prom_parse()"

which was basically trying to hide a symptom of the original mistake
this revert fixes.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/platforms/83xx/mpc832x_mds.c

@@ -106,7 +106,6 @@ static struct of_device_id mpc832x_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .type = "qe", },
-	{ .type = "mdio", },
 	{},
 };
 

arch/powerpc/platforms/83xx/mpc832x_rdb.c

@@ -70,7 +70,6 @@ static struct of_device_id mpc832x_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .type = "qe", },
-	{ .type = "mdio", },
 	{},
 };
 

arch/powerpc/platforms/83xx/mpc836x_mds.c

@@ -113,7 +113,6 @@ static struct of_device_id mpc836x_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .type = "qe", },
-	{ .type = "mdio", },
 	{},
 };
 

arch/powerpc/platforms/85xx/mpc85xx_mds.c

@@ -142,7 +142,6 @@ static struct of_device_id mpc85xx_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .type = "qe", },
-	{ .type = "mdio", },
 	{},
 };