zenfone9: Convert factory mnt_point symlink to install_symlink targets

Change-Id: I4882509a60545416223f25ccab12142e05e127a6
diff --git a/device.mk b/device.mk
index d132984..6844da0 100755
--- a/device.mk
+++ b/device.mk
@@ -246,6 +246,10 @@
 PRODUCT_PACKAGES += \
     android.hardware.memtrack-V1-ndk_platform.vendor
 
+# Mount Point symlink
+PRODUCT_PACKAGES += \
+    mnt_point_factory_symlink
+
 # NFC
 PRODUCT_PACKAGES += \
     NfcNci \