linux-phytec-ti

arm64: dts: ti: add mii-rt phandle in icssg prueth DT nodes

To allow configure MII RT interface TX_IPG0/1 values differently
for 100M link vs 1G link, add phandle for mii_rt regmap node
in icssg prueth DT nodes.

Acked-by: Roger Quadros <rogerq@ti.com>
Acked-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>