int pb_protocol_device_len(const struct device *dev);
int pb_protocol_boot_option_len(const struct boot_option *opt);
int pb_protocol_boot_len(const struct boot_command *boot);
int pb_protocol_device_len(const struct device *dev);
int pb_protocol_boot_option_len(const struct boot_option *opt);
int pb_protocol_boot_len(const struct boot_command *boot);
int pb_protocol_device_cmp(const struct device *a, const struct device *b);
int pb_protocol_boot_option_cmp(const struct boot_option *a,
int pb_protocol_device_cmp(const struct device *a, const struct device *b);
int pb_protocol_boot_option_cmp(const struct boot_option *a,
int pb_protocol_deserialise_boot_command(struct boot_command *cmd,
const struct pb_protocol_message *message);
int pb_protocol_deserialise_boot_command(struct boot_command *cmd,
const struct pb_protocol_message *message);