docs: devicetree: bindings: submitting-patches.rst: avoid using ReST :doc:`foo` markup

The :doc:`foo` tag is auto-generated via automarkup.py.
So, use the filename at the sources, instead of :doc:`foo`.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/0048c23d47b582dd1a1959628fd2b895209ac826.1623824363.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/devicetree/bindings/submitting-patches.rst

@@ -7,8 +7,8 @@ Submitting Devicetree (DT) binding patches
 I. For patch submitters
 =======================
 
-  0) Normal patch submission rules from Documentation/process/submitting-patches.rst
-     applies.
+  0) Normal patch submission rules from
+     Documentation/process/submitting-patches.rst applies.
 
   1) The Documentation/ and include/dt-bindings/ portion of the patch should
      be a separate patch. The preferred subject prefix for binding patches is::
@@ -25,8 +25,8 @@ I. For patch submitters
 
        make dt_binding_check
 
-     See Documentation/devicetree/bindings/writing-schema.rst for more details about
-     schema and tools setup.
+     See Documentation/devicetree/bindings/writing-schema.rst for more details
+     about schema and tools setup.
 
   3) DT binding files should be dual licensed. The preferred license tag is
      (GPL-2.0-only OR BSD-2-Clause).
@@ -84,7 +84,8 @@ II. For kernel maintainers
 III. Notes
 ==========
 
-  0) Please see :doc:`ABI` for details regarding devicetree ABI.
+  0) Please see Documentation/devicetree/bindings/ABI.rst for details
+     regarding devicetree ABI.
 
   1) This document is intended as a general familiarization with the process as
      decided at the 2013 Kernel Summit.  When in doubt, the current word of the