Use blocklist sub-property in sanitize

Update language to comply with Android’s inclusive language guidance

See https://source.android.com/setup/contribute/respectful-code for
reference

Bug: 161896447
Bug: 162245450

Test: build topic
Change-Id: I3bd7ee99914a13961e2afa7062a7019c24d01a46

Android.bp

@@ -137,7 +137,7 @@ cc_library_static {
         ],
         // Enable CFI if this becomes a shared library.
         // cfi: true,
-        blacklist: "libxaac_blacklist.txt",
+        blocklist: "libxaac_blocklist.txt",
     },
 
     arch: {