linux-phytec-ti

arm: dts: am57xx-idk-common: remove unused red-rx and red-tx irq properties

Based on latest update to PRU Ethernet driver, for switch case also same
rx interrupts are used as in EMAC case. So remove the red-tx/rx DT
properties from the DTS file.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>