UPSTREAM: commonlib/fsp.h: include sys/types.h for ssize_t

This file reportedly didn't compile on SUSE Linux with gcc 4.3.4:

[...]
>     HOSTCC     cbfstool/fsp_relocate.o
> In file included from coreboot/src/commonlib/fsp_relocate.c:18:
> coreboot/src/commonlib/include/commonlib/fsp.h:26: error:
> expected '=', ',', ';', 'asm' or '__attribute__' before
> 'fsp_component_relocate'
[...]

According to POSIX-2008[1], sys/types.h defines ssize_t, so include it.
This should not break coreboot code (as opposed to utils code), as we
have a sys/types.h in src/include.

[1]: http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_types.h.html

BUG=none
BRANCH=none
TEST=none

Change-Id: I61d49c1e118c7d16d2f4ec1b600796c7b996c6f3
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: b89b2c50c5
Original-Change-Id: Id3694dc76c41d800ba09183e4b039b0719ac3d93
Original-Signed-off-by: Jonathan Neuschfer <j.neuschaefer@gmx.net>
Original-Reviewed-on: https://review.coreboot.org/18417
Original-Tested-by: build bot (Jenkins)
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
Original-Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://chromium-review.googlesource.com/445833

src/commonlib/include/commonlib/fsp.h

@@ -18,6 +18,7 @@
 
 #include <stddef.h>
 #include <stdint.h>
+#include <sys/types.h>
 
 /*
  * Relocate FSP held within buffer defined by size to new_addr. Returns < 0