ARM: mvebu: modify Orion and Kirkwoord crypto compatible strings

Explicitly use the SoC specific compatible strings in kirkwood.dtsi and
dove.dtsi, so that the crypto devices have access to the TDMA feature
when attached to the new CESA driver.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>