Added compiler lines to Makefile (Last commit builds but gives architecture error)

network_device/Makefile

@@ -27,7 +27,10 @@
 #    flxnet_pcie-y := flx_net_pcie.o
 #             
 #endif
+export ARCH:=arm64
+export CROSS_COMPILE:=aarch64-linux-gnu-
 
+CC=$(CROSS_COMPILE)gcc
 # If we are running by kernel building system
 ifneq ($(KERNELRELEASE),)
 	#$(TARGET_MODULE)-objs := main.o device_file.o