system/core 64-bit cleanup.

This cleans up most of the size-related problems in system/core.
There are still a few changes needed for a clean 64-bit build,
but they look like they might require changes to things like the
fastboot protocol.

Change-Id: I1560425a289fa158e13e2e3173cc3e71976f92c0
diff --git a/fastbootd/transport_socket.c b/fastbootd/transport_socket.c
index ff0f3bd..664d473 100644
--- a/fastbootd/transport_socket.c
+++ b/fastbootd/transport_socket.c
@@ -88,7 +88,7 @@
     ssize_t ret;
     struct socket_handle *handle = container_of(thandle, struct socket_handle, handle);
 
-    D(DEBUG, "about to write (fd=%d, len=%d)", handle->fd, len);
+    D(DEBUG, "about to write (fd=%d, len=%zu)", handle->fd, len);
     ret = bulk_write(handle->fd, data, len);
     if (ret < 0) {
         D(ERR, "ERROR: fd = %d, ret = %zd", handle->fd, ret);
@@ -103,7 +103,7 @@
     ssize_t ret;
     struct socket_handle *handle = container_of(thandle, struct socket_handle, handle);
 
-    D(DEBUG, "about to read (fd=%d, len=%d)", handle->fd, len);
+    D(DEBUG, "about to read (fd=%d, len=%zu)", handle->fd, len);
     ret = bulk_read(handle->fd, data, len);
     if (ret < 0) {
         D(ERR, "ERROR: fd = %d, ret = %zd", handle->fd, ret);