Add flag to enable cal delete feature target-wise

This change add flag to enable cal data delete feature
target-wise.

Change-Id: I0f04cb3b6d3f90f38f566e239e8a5277fa62fd09
Signed-off-by: Sandeep Singh <sandsing@codeaurora.org>

bengal/wlan.mk

@@ -26,3 +26,6 @@ WIFI_HIDL_FEATURE_DUAL_INTERFACE := true
 
 # Enable SAP + SAP Feature.
 QC_WIFI_HIDL_FEATURE_DUAL_AP := true
+
+#Enable cal delete feature
+TARGET_CAL_DATA_CLEAR := true