procd: fix compile if procd-ujail is not selected

Generating syscall-names.h was added as a dependency for ujail in order
to support seccomp for OCI containers.
This, however, slipped into the wrong place and broke cmake in case
of procd-seccomp being selected but procd-ujail not being selected.
Move dependency to the right place to fix that.

Fixes: bb4a446 ("uxc: add container management CLI tool")
Reported-by: Paul Blazejowski <paulb@blazebox.homeip.net>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>

CMakeLists.txt

@@ -114,6 +114,9 @@ INSTALL(TARGETS ujail
 	RUNTIME DESTINATION ${CMAKE_INSTALL_SBINDIR}
 )
 ADD_DEPENDENCIES(ujail capabilities-names-h)
+IF(SECCOMP_SUPPORT)
+  ADD_DEPENDENCIES(ujail syscall-names-h)
+ENDIF()
 
 ADD_EXECUTABLE(ujail-console jail/console.c)
 TARGET_LINK_LIBRARIES(ujail-console ${ubox} ${ubus} ${blobmsg_json})
@@ -127,9 +130,6 @@ INSTALL(TARGETS uxc
 	RUNTIME DESTINATION ${CMAKE_INSTALL_SBINDIR}
 )
 endif()
-IF(SECCOMP_SUPPORT)
-  ADD_DEPENDENCIES(ujail syscall-names-h)
-ENDIF()
 
 IF(UTRACE_SUPPORT)
 ADD_EXECUTABLE(utrace trace/trace.c)