Clarify null-termination of name field

@VintfStability

parcelable BufferDescriptorInfo {

    /**

     * The name of the buffer in ASCII. Useful for debugging/tracing.

     * The name of the buffer in null-terminated ASCII. Useful for debugging/tracing.

     *

     * NOTE: While a well behaved client will ensure it passes a null-terminated string

     *       within the 128-byte limit, the IAllocator service implementation should be

     *       be defensive against malformed input. As such, it is recommended that

     *       IAllocator implementations proactively do `name[127] = 0` upon receiving

     *       an allocation request to enusre that the string is definitely

     *       null-terminated regardless of what the client sent.

     */

    byte[128] name;