pvr: Use vk_device's enabled features struct
Avoids duplicating the struct in pvr_device and fixes uninitialized accesses when ppEnabledFeatures was NULL.
Noticed when running valgrind over dEQP.
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Avoids duplicating the struct in pvr_device and fixes uninitialized accesses when ppEnabledFeatures was NULL.
Noticed when running valgrind over dEQP.