qcacld-3.0: Enable packet drop on non-monitoring MAC

Enable the feature flag to drop packets on non
monitoring RXDMA2SW ring.

Change-Id: I49cb276827f4a06791183ee3fe8c88ba84df085d
CRs-Fixed: 2799988

Kbuild

@@ -3288,6 +3288,7 @@ cppflags-y += -DHAL_DISABLE_NON_BA_2K_JUMP_ERROR
 cppflags-y += -DENABLE_HAL_SOC_STATS
 cppflags-y += -DENABLE_HAL_REG_WR_HISTORY
 cppflags-y += -DDP_RX_DESC_COOKIE_INVALIDATE
+cppflags-y += -DMON_ENABLE_DROP_FOR_MAC
 endif
 
 # Enable Low latency optimisation mode