arm: dts: k3-am625-verdin-wifi-dev-u-boot.dtsi: Fix DMA with BCDMA

BCDMA can be used at SPL for OSPI boot and mem-to-mem DMA
so add "bootph-all" to BCDMA node.

Suggested-by: Nishanth Menon <nm@ti.com>
Fixes: 9a3f2b67 ("arm: dts: k3-am625-verdin-wifi-dev-u-boot.dtsi: Fix DMA/Ethernet")
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Reviewed-by: Nishanth Menon <nm@ti.com>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>