webkit-efl: add edbus dependency

| -- checking for module 'edbus>=1.1.0'
| --   package 'edbus>=1.1.0' not found
| -- checking for module 'eukit>=1.1.0'
| --   package 'eukit>=1.1.0' not found

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>