[KA08] Allow system_server call tcp socket ioctl

In order to offload application tcp socket’s keepalive
message, system server must know if application's socket
is idle with no data in send/receive queues. Allow
system_server to use ioctl on all tcp sockets.

Bug: 114151147
Test: -build, flash, boot
Change-Id: I3f5a0e06bc22f8a64ae6180db48df2a31106c511
1 file changed