msm: ADSPRPC: make happy of compiler -Wmaybe-uninitialized

-Wmaybe-uninitialized issue found of variable
may be used uninitialized.

Change-Id: I95cd75af866db8e201913c4644ad942374fa76db
Signed-off-by: Maria Yu <aiquny@codeaurora.org>
diff --git a/drivers/char/adsprpc.c b/drivers/char/adsprpc.c
index 7de9b79c..e158dbb 100644
--- a/drivers/char/adsprpc.c
+++ b/drivers/char/adsprpc.c
@@ -1506,7 +1506,7 @@
 	int cid = fl->cid;
 	int interrupted = 0;
 	int err = 0;
-	struct timespec invoket;
+	struct timespec invoket = {0};
 
 	if (fl->profile)
 		getnstimeofday(&invoket);