Skia: Add NEON intrinsic D32_A8_Black
Skia: Add NEON intrinsic D32_A8_Black

If NEON support is indiciated via __ARM_HAVE_NEON flag then use
an optimized NEON intrinsics version of the D32_A8_Black masking
function.

Change-Id: I78c6dd18cdc0437907ab330ba1f19adb56b8717a
(cherry picked from commit b50f52460e78c63949b5281f7e22d674afac8683)
(cherry picked from commit a41a18bc008ef0417d5df219444d908b53fe33f7)

AOKP/external_skia,marlontoe/android_external_skia,ChameleonOS/android_external_skia,CandyKat/external_skia,androidarmv6/android_external_skia,IllusionRom-deprecated/android_platform_external_skia,AOKP/external_skia,AOSP-S4-KK/platform_external_skia,AOSP-S4-KK/platform_external_skia,StelixROM/android_external_skia,VanirAOSP/external_skia,Nico60/external_skia,CandyKat/external_skia,androidarmv6/android_external_skia,ChameleonOS/android_external_skia,SuperNexus/android_external_skia,AOKP/external_skia,MyAOSP/external_skia,SuperNexus/android_external_skia,Nico60/external_skia,AOSP-S4-KK/platform_external_skia,ChameleonOS/android_external_skia,marlontoe/android_external_skia,MyAOSP/external_skia,StelixROM/android_external_skia,MagicDevTeam/android_external_skia,TripNRaVeR/android_external_skia,SuperNexus/android_external_skia,CandyKat/external_skia,CandyKat/external_skia,Mahdi-Rom/android_external_skia,androidarmv6/android_external_skia,IllusionRom-deprecated/android_platform_external_skia,SuperNexus/android_external_skia,VanirAOSP/external_skia,marlontoe/android_external_skia,IllusionRom-deprecated/android_platform_external_skia,androidarmv6/android_external_skia,VanirAOSP/external_skia,VanirAOSP/external_skia,Mahdi-Rom/android_external_skia,marlontoe/android_external_skia,TripNRaVeR/android_external_skia,VanirAOSP/external_skia,marlontoe/android_external_skia,StelixROM/android_external_skia,MyAOSP/external_skia,Mahdi-Rom/android_external_skia,TripNRaVeR/android_external_skia,androidarmv6/android_external_skia,AOSP-S4-KK/platform_external_skia,StelixROM/android_external_skia,androidarmv6/android_external_skia,AOKP/external_skia,AOSP-S4-KK/platform_external_skia,IllusionRom-deprecated/android_platform_external_skia,TripNRaVeR/android_external_skia,Nico60/external_skia,MyAOSP/external_skia,MyAOSP/external_skia,StelixROM/android_external_skia,Mahdi-Rom/android_external_skia,MagicDevTeam/android_external_skia,androidarmv6/android_external_skia,MagicDevTeam/android_external_skia,CandyKat/external_skia,Nico60/external_skia,androidarmv6/android_external_skia,Nico60/external_skia,StelixROM/android_external_skia,MagicDevTeam/android_external_skia,ChameleonOS/android_external_skia,Mahdi-Rom/android_external_skia