Merge "[NUI] Change the key of Placeholder property"

diff --cc src/Tizen.NUI/src/public/BaseComponents/TextEditor.cs
index 5762cb8,bf6de33..0f69905
--- 1/src/Tizen.NUI/src/public/BaseComponents/TextEditor.cs
--- 2/src/Tizen.NUI/src/public/BaseComponents/TextEditor.cs
+++ b/src/Tizen.NUI/src/public/BaseComponents/TextEditor.cs
@@@ -1444,4 -1444,4 +1444,4 @@@ namespace Tizen.NUI.BaseComponent
  
      }
  
--}
++}

diff --cc src/Tizen.NUI/src/public/BaseComponents/TextField.cs
index 2a9096a,614253b..d9b7128
--- 1/src/Tizen.NUI/src/public/BaseComponents/TextField.cs
--- 2/src/Tizen.NUI/src/public/BaseComponents/TextField.cs
+++ b/src/Tizen.NUI/src/public/BaseComponents/TextField.cs
@@@ -1450,4 -1450,4 +1450,4 @@@ namespace Tizen.NUI.BaseComponent
  
      }
  
--}
++}