The silly fine-grained enabling of features on the VkDevice
seems to be ignored in practice by the implementations, but
wideLines becomes relevant because the validation layers warns
if a line width is set on the pipeline without enabling the feature
on the device. So to play nice, enable the features we care about.
Change-Id: I0c64a0d10a8279fe43d899118b0d6f0e4f875d41
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
67faf0641d