Update license info for new files

Author: kpolonski-atomic

lib/mayaUsd/render/vp2ShaderFragments/FallbackCPVShaderStandardSurface.xml

@@ -1,6 +1,6 @@
 <!--
 ========================================================================
-Copyright 2019 Autodesk
+Copyright 2024 Atomic Cartoons Inc.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.

lib/mayaUsd/render/vp2ShaderFragments/FallbackShaderStandardSurface.xml

@@ -1,6 +1,6 @@
 <!--
 ========================================================================
-Copyright 2019 Autodesk
+Copyright 2024 Atomic Cartoons Inc.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.

lib/mayaUsd/render/vp2ShaderFragments/FloatToFloat3.xml

@@ -1,3 +1,20 @@
+<!--
+========================================================================
+Copyright 2024 Atomic Cartoons Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+========================================================================
+-->
 <fragment uiName="FloatToFloat3" name="FloatToFloat3" type="plumbing" class="ShadeFragment" version="1.0" feature_level="0">
     <description>
         Expands a float to a float3 array of all the same value.