Update default -j argument for generate-blob-lists

People have faster machines now, so we should take advantage of that.
This bumps the `make -j` value from 32 to 64.

Change-Id: I2db6f048f7c9bbaea84cdfd8a719a50d7d01cc95

generate-blob-lists.sh

@@ -62,7 +62,7 @@ else
   do
     rm -rf out
     lunch aosp_$DEVICENAME-user
-    make -j32
+    make -j64
     cat out/target/product/$DEVICENAME/installed-files.txt |
       cut -b 15- |
       sort -f > $ARCHIVEDIR/$DEVICENAME-with.txt
@@ -73,7 +73,7 @@ else
   do
     rm -rf out
     lunch aosp_$DEVICENAME-user
-    make -j32
+    make -j64
     cat out/target/product/$DEVICENAME/installed-files.txt |
       cut -b 15- |
       sort -f > $ARCHIVEDIR/$DEVICENAME-without.txt