arm-bsp/tf-a/fvp-rd-kronos: Set cpu compatible to neoverse-v3 in dts

Replace cpu compatible "neoverse-v3ae" with "neoverse-v3"
for all the CPUs in the Trusted Firmare-A device tree.

Signed-off-by: Ziad Elhanafy <ziad.elhanafy@arm.com>