The prueth irqs are defined differently for pruss1_eth and pruss2_eth while
previously they were defined the same way as each pruss has its own INTC.

Sync prussX_eth IRQ mappings to follow FW resources for K5.4.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>