manta: wifi: Disable spuravoid feature in FW

Change-Id: I52f3cc678c5f4d886e1807634e9f39181368f7b2
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/bcmdhd.cal b/bcmdhd.cal
index 8c1a42e..17fa2b3 100644
--- a/bcmdhd.cal
+++ b/bcmdhd.cal
@@ -8,6 +8,7 @@
 sromrev=9
 xtalfreq=37400
 nocrc=1
+disable_spuravoid=1
 ag0=0x2
 ag1=0x2
 ag2=0xff