Add ExecCommand_fp.h.

Add file ExecCommand_fp.h. Needed for inclusion in TPM2.0 simulator.
TPMCmdp.c includes ExecCommand_fp.h implying that it should exist.

Added package name HandleProcess_fp.h header guard.

TEST=$ sudo emerge tpm2
     builds libtpm2.a
BUG=None

Change-Id: Ia0aac137f8b32f4f24a1ade4436a23c8a73434d7
Signed-off-by: Jocelyn Bohr <bohr@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/289862
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
diff --git a/ExecCommand.c b/ExecCommand.c
index 43b5e77..996f86e 100644
--- a/ExecCommand.c
+++ b/ExecCommand.c
@@ -6,6 +6,7 @@
 // October 30, 2014
 
 #include     "InternalRoutines.h"
+#include     "ExecCommand_fp.h"
 #include     "HandleProcess_fp.h"
 #include     "SessionProcess_fp.h"
 #include     "CommandDispatcher_fp.h"