Unify include directories for i915 headers

include i915_drm_prelim.h using relative path

Related-To: NEO-6852
Signed-off-by: Mateusz Jablonski <mateusz.jablonski@intel.com>

shared/source/CMakeLists.txt

@@ -55,9 +55,9 @@ function(generate_shared_lib LIB_NAME MOCKABLE)
     )
   else()
     target_include_directories(${LIB_NAME} PUBLIC
-                               ${I915_INCLUDES_DIR}
                                ${CMAKE_CURRENT_SOURCE_DIR}/os_interface/linux
     )
+
   endif()
 
   create_project_source_tree(${LIB_NAME})

shared/source/os_interface/linux/i915_prelim.h

@@ -9,7 +9,7 @@
 #include <sys/ioctl.h>
 namespace NEO {
 namespace PrelimI915 {
-#include "third_party/uapi/prelim/drm/i915_drm.h"
+#include "drm/i915_drm_prelim.h"
 }
 } // namespace NEO
 using NEO::PrelimI915::drm_gem_close;