test/tpm-emu: include sockets and channel headers in tpm-emu header

Include sockets and channel headers to that the header is
self-contained.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Message-Id: <20200609125409.24179-2-eric.auger@redhat.com>

tests/qtest/tpm-emu.h

@@ -16,6 +16,9 @@
 #define TPM_RC_FAILURE 0x101
 #define TPM2_ST_NO_SESSIONS 0x8001
 
+#include "qemu/sockets.h"
+#include "io/channel.h"
+
 struct tpm_hdr {
     uint16_t tag;
     uint32_t len;