qcacld-3.0: Enable monitor mode for SDXPRAIRIE

Enable monitor mode for SDXPRAIRIE.

Change-Id: I70015845ea0d8dcc3aa2019ab8fdb300dc8eb49d
CRs-Fixed: 2529073

configs/default_defconfig

@@ -856,7 +856,6 @@ CONFIG_CHANNEL_HOPPING_ALL_BANDS := y
 endif
 
 ifeq ($(CONFIG_ARCH_SDXPRAIRIE), y)
-	CONFIG_FEATURE_MONITOR_MODE_SUPPORT := n
 	ifneq ($(CONFIG_SLUB_DEBUG), y)
 		CONFIG_DP_TRACE := n
 	endif