Use android-base/stringprintf.h instead of base/string/stringprintf.h am: 4f02976254

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/3298451

Change-Id: I7f33c67c3c1f9eae73cf3ae91ff1bba0113af507
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>