Add product apk support from libnativeloader

Currently libnativeloader appends vendor lib path if apk is from vendor
partition. Similar to this we should add product lib path if apk if from product partition.

Bug: 124705551
Test: m -j && tested from crosshatch with product apps (such as Wallpaper)
Change-Id: I8c3473f1f70b1c22dcaed7eb2d5f9c3deee9e1a5
Merged-In: I8690167ca8098015c8ae4bbb4f028404c5e94dc0