dt-bindings: usb: snps,dwc3: Split core description

JIRA: https://issues.redhat.com/browse/RHEL-78931

commit 6d7965f
Author: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
Date: Mon, 13 Jan 2025 21:11:34 -0800

  The Synopsys DWC3 core is found either as a standalone block or
  integrated with vendor glue logic. So far the latter has been described
  as two separate IP blocks in DeviceTree, but the two parts are not
  separate.

  In the case where the core is integrated together with vendor glue,
  resources such as clock and resets are often customized by the vendor,
  such that the standard properties doesn't make sense.

  Split the snps,dwc3 binding in a description of the core properties and
  the standard "glue" properties, in order to allow vendor bindings to
  inherit the core properties.

  Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
  Signed-off-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
  Link: https://lore.kernel.org/r/20250113-dwc3-refactor-v3-1-d1722075df7b@oss.qualcomm.com
  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Desnes Nunes <desnesn@redhat.com>

Author: Desnes Nunes