Fastbootd: socket and network transport

Change-Id: I395e5361d0484bd11421225c152f9aec00305f11
diff --git a/fastbootd/Android.mk b/fastbootd/Android.mk
index f7c67a9..063e308 100644
--- a/fastbootd/Android.mk
+++ b/fastbootd/Android.mk
@@ -30,7 +30,9 @@
     commands/virtual_partitions.c \
     fastbootd.c \
     protocol.c \
+    socket_client.c \
     transport.c \
+    transport_socket.c \
     trigger.c \
     usb_linux_client.c \
     utils.c