Replace MALLOC_IMPL with MALLOC_SVELTE.
Replace MALLOC_IMPL with MALLOC_SVELTE.

Bug: http://b/26390299
Change-Id: If093108ceb7874db634fe845c1a12ae1c0ebe2e6

maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead