arm64: dts: ti: k3-am642-sk: Add boot phase tags marking

arm64: dts: ti: k3-am642-sk: Add boot phase tags marking

[ Upstream commit 4669288219a7f77c6ff992d10ce6a20660863979 ]

bootph-all as phase tag was added to dt-schema
(dtschema/schemas/bootph.yaml) to describe various node usage during
boot phases with DT.

Describe the same for AM642-sk boot devices.

Signed-off-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20230911172902.1057417-4-nm@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Stable-dep-of: 379c7752bbd0 ("arm64: dts: ti: k3-am64-main: Fix ITAP/OTAP values for MMC")
Signed-off-by: Sasha Levin <sashal@kernel.org>