Revert "hammerhead: wifi: Set default locale without DFS channels"

This reverts commit 87952aeb3b42828e808475cc51ce4892fb102f75.
diff --git a/bcmdhd.cal b/bcmdhd.cal
index 7c72a19..ca814d0 100644
--- a/bcmdhd.cal
+++ b/bcmdhd.cal
@@ -13,7 +13,7 @@
 #boardnum=57410
 macaddr=00:90:4c:c5:12:38
 ccode=XV
-regrev=17
+regrev=16
 antswitch=0
 pdgain2g=7
 pdgain5g=7