Revert "Revert "Added clean command to wlan module target""

This reverts commit 2d90b4edb17b9023cb83aeabc868b0909c6ce410.
diff --git a/BoardConfig.mk b/BoardConfig.mk
index fdbc85d..12edd48 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -271,5 +271,5 @@
 	ln -sf /system/lib/modules/$(WLAN_CHIPSET)/$(WLAN_CHIPSET)_wlan.ko $(TARGET_OUT)/lib/modules/wlan.ko
 	mv device/samsung/gprimeltecan/wlan/prima/wlan.ko $(KERNEL_MODULES_OUT)/$(WLAN_CHIPSET)/$(WLAN_CHIPSET)_wlan.ko
 	arm-eabi-strip --strip-debug $(KERNEL_MODULES_OUT)/$(WLAN_CHIPSET)/$(WLAN_CHIPSET)_wlan.ko
-
+	make -C device/samsung/gprimeltecan/wlan/prima/ clean
 TARGET_KERNEL_MODULES := KERNEL_EXTERNAL_MODULES