Add removed platform functions used by apps.

Added get_malloc_leak_info and free_malloc_leak_info for arm 32 bit
only so that the kindle app will continue to run.

Bug: 132175052

Test: Ran kindle app, read pdf file. Verified libKindleReaderJNI.so
Test: is loaded in memory properly.
Change-Id: Ib1ea3a37b3729f9bcc2739c5f3a584ea8f66d200