Merge branch 'net-dsa-mt7530-PHYLINK-and-port-5'

René van Dorst says:

====================
net: dsa: mt7530: Convert to PHYLINK and add support for port 5

1. net: dsa: mt7530: Convert to PHYLINK API
   This patch converts mt7530 to PHYLINK API.
2. dt-bindings: net: dsa: mt7530: Add support for port 5
3. net: dsa: mt7530: Add support for port 5
   These 2 patches adding support for port 5 of the switch.

v2->v3:
 * Removed 'status = "okay"' lines in patch #2
 * Change a port 5 setup message in a debug message in patch #3
 * Added ack-by and tested-by tags
v1->v2:
 * Mostly phylink improvements after review.
rfc -> v1:
 * Mostly phylink improvements after review.
 * Drop phy isolation patches. Adds no value for now.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>