[SerialICE] Patch merged into serialice/master: qemu-0.15.x/serialice: Fix compilation warnings

the following patch was just integrated into master:
commit 17d8e9034eb4607a02e00f3279ebbebd6c0fea51
Author: Patrick Rudolph 
Date:   Mon Apr 25 12:17:55 2016 +0200

qemu-0.15.x/serialice: Fix compilation warnings

Include the required header to fix compiler warnings.

Change-Id: I39085719ca81fb4592138fc254ada6caaecb2fc7
    Signed-off-by: Patrick Rudolph 
    Reviewed-on: https://review.coreboot.org/14507
    Tested-by: build bot (Jenkins)
    Reviewed-by: Kyösti Mälkki

See https://review.coreboot.org/14507 for details.

-gerrit