dri: make use of loader_get_extensions_name(..) helper

Changes since v1:
 - removed not needed includes
 - use the loader version of the helper

v2 [Emil Velikov]
 - Keep the includes - they are required.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
3 files changed