securemsm-kernel: Fix compilation errors with CONFIG_FTRACE=n

smcinvoke.c:578:10: error: implicit declaration of function 'kthread_should_stop'
while (!kthread_should_stop()) {

smcinvoke.c:617:43: error: implicit declaration of function 'kthread_run'
smcinvoke[i].postprocess_kthread_task = kthread_run(

Change-Id: Id6a8b6844ec7ae00b55c81d3760a91da9d49a9ad
Signed-off-by: Patrick Daly <quic_pdaly@quicinc.com>

smcinvoke/smcinvoke.c

@@ -29,6 +29,7 @@
 #include <asm/cacheflush.h>
 #include <soc/qcom/qseecomi.h>
 #include <linux/qtee_shmbridge.h>
+#include <linux/kthread.h>
 #include "misc/qseecom_kernel.h"
 #include "smcinvoke.h"
 #include "smcinvoke_object.h"