Fix build break

Add WebCore/platform/tizen in the WebKit2 PlatformEfl.cmake
Clear the text highlight when a user taps the input field

[Title] Clear the text highlight when a user taps the input field
[Issue#] N_SE-43213
[Problem] Text highlight are remained in input field eventhough user input another text.
[Cause] Text highlight are not cleared.
[Solution] Clare the text highlight when a user inputs text.