Network info

Add UAPI and core message that allows user space space to fetch
information about network models built into the firmware.

Change-Id: Ic92529bce3edd0a5499e691a566bd065da2a72ad
diff --git a/kernel/ethosu_mailbox.h b/kernel/ethosu_mailbox.h
index af3d986..f004f92 100644
--- a/kernel/ethosu_mailbox.h
+++ b/kernel/ethosu_mailbox.h
@@ -138,4 +138,14 @@
 			     uint8_t pmu_event_config_count,
 			     uint8_t pmu_cycle_counter_enable);
 
+/**
+ * ethosu_mailbox_network_info_request() - Send network info request
+ *
+ * Return: 0 on success, else error code.
+ */
+int ethosu_mailbox_network_info_request(struct ethosu_mailbox *mbox,
+					void *user_arg,
+					struct ethosu_buffer *network,
+					uint32_t network_index);
+
 #endif /* ETHOSU_MAILBOX_H */