rename NativeDisplay to VANativeDisplay
rename NativeDisplay to VANativeDisplay

Signed-off-by: Xiang, Haihao <8d677183e5993577d4fa73a419b76987913292d6@intel.com>
[cherry-pick'ed from commit a65acb298894fa90e3cb7692795027143d6b1dbe]

halleyzhao/libva-fdo,android-ia/hardware_intel_libva,android-ia/hardware_intel_libva,CyanogenMod/android_hardware_intel_libva,halleyzhao/libva-fdo,halleyzhao/libva-fdo,CyanogenMod/android_hardware_intel_libva,CyanogenMod/android_hardware_intel_libva,android-ia/hardware_intel_libva