arm64: dts: ti: k3-am65-main: drop dma-coherent in crypto

crypto driver itself is not dma-coherent. So drop it.

Fixes: b366b240

 ('arm64: dts: ti: k3-am6: Add crypto
 accelarator node')
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>