aarch64: replace package override with local.mk rule in external.mk

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

configs/aarch64_defconfig

@@ -6,7 +6,6 @@ BR2_DL_DIR="$(BR2_EXTERNAL_INFIX_PATH)/dl"
 BR2_CCACHE=y
 BR2_CCACHE_DIR="$(BR2_EXTERNAL_INFIX_PATH)/.ccache"
 BR2_ENABLE_DEBUG=y
-BR2_PACKAGE_OVERRIDE_FILE="$(BR2_EXTERNAL_INFIX_PATH)/local.mk"
 BR2_GLOBAL_PATCH_DIR="$(BR2_EXTERNAL_INFIX_PATH)/patches"
 BR2_TARGET_GENERIC_HOSTNAME="infix"
 BR2_TARGET_GENERIC_ISSUE="Inf/IX by KernelKit"

external.mk

@@ -1,5 +1,10 @@
 include $(sort $(wildcard $(BR2_EXTERNAL_INFIX_PATH)/package/*/*.mk))
 
+.PHONY:
+local.mk:
+	@echo "Installing local override for certain packages ..."
+	@(cd $O && ln -s $(BR2_EXTERNAL_INFIX_PATH)/local.mk .)
+
 .PHONY: run
 run:
 	@echo "Starting Qemu  ::  Ctrl-a x -- exit | Ctrl-a c -- toggle console/monitor"