Fix Wmissing-field-initializers in external/mmc-utils.
am: 358f4f5

* commit '358f4f5dba8c5336011d61d163bf3e0900147672':
  Fix Wmissing-field-initializers in external/mmc-utils.

Change-Id: I282741e49599f5493090ad743c866c099cf3ded6