[automerger skipped] vold: only allow emmc_optimized on eMMC storage am: 006eed8e3a am: 32de8f0962 -s ours

am skip reason: Change-Id Ie27b80658db53b1a4207b3cbb4e309d05130812e with SHA-1 006eed8e3a is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/vold/+/12098822

Change-Id: Ia156e546d9051c994fe8faf52b2c65ee4d00f18a