Fix build with VA

This commit readd ${VA_LIBRARIES} ${VA_INTEL_LIBRARIES}
that was missed in commit 2200e13c

    diff --git a/samples/va_intel/CMakeLists.txt b/samples/va_intel/CMakeLists.txt
    -    ocv_target_link_libraries(${the_target} ${OPENCV_LINKER_LIBS} ${OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS} ${VA_LIBRARIES} ${VA_INTEL_LIBRARIES})
    +  ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS})

samples/va_intel/CMakeLists.txt

@@ -17,5 +17,5 @@ ocv_include_modules_recurse(${OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS})
 file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
 foreach(sample_filename ${all_samples})
   ocv_define_sample(tgt ${sample_filename} va_intel)
-  ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS})
+  ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS} ${VA_LIBRARIES} ${VA_INTEL_LIBRARIES})
 endforeach()