arm64: dts: qcom: hamoa/purwa: Flatten usb controller nodes

arm64: dts: qcom: hamoa/purwa: Flatten usb controller nodes

Flatten usb controller nodes and update to using latest bindings and
flattened driver approach.

Tested this patch on CRD platform. For testing purpose, modified dr_mode
property and added usb-role-switch property to the 3 super speed capable
DRD controllers and valdiated both host and device mode. Also validated
host mode on the multiport controller.

Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260323103119.1801139-1-krishna.kurapati@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>