Fix syscall generator scripts

Fix syscall generator scripts

Two small fixes for the syscall header generation scripts.

Check that the number of arguments match between the architecture
syscall list and the inout table definition.

Remove the duplication of arguments to make sure the per architecture
overrides are applied.

Change-Id: Ie20ef9030e57134265ae0ae885a87c5e8b3f61b1
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>