arm64: dts: ti: am62-phycore-som: Increase cpu frequency to 1.4 GHz

The am625 is capable of running at 1.4 GHz when VDD_CORE is increased
from 0.75V to 0.85V. Here we add a 1.4 GHz node to the a53_opp_table and
increase the VDD_CORE voltage accordingly.

Signed-off-by: Garrett Giordano <ggiordano@phytec.com>
Reviewed-by: Wadim Egorov <w.egorov@phytec.de>
Link: https://lore.kernel.org/r/20241001071916.1362213-2-ggiordano@phytec.com


Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>