It looks that your change is device specific and not framework related. In that case you probably want to include your file in aosp / device / ... / model /
You can check how is done looking in the device makefile from samsung tuna: https://android.googlesource.com/device/samsung/tuna/+/master/device.mk
The PRODUCT_COPY_FILES variable includes the "origin_file:destination_file"
PRODUCT_COPY_FILES += \
$(LOCAL_KERNEL):kernel \
device/samsung/tuna/init.tuna.rc:root/init.tuna.rc \
device/samsung/tuna/init.tuna.usb.rc:root/init.tuna.usb.rc \
device/samsung/tuna/fstab.tuna:root/fstab.tuna \
device/samsung/tuna/ueventd.tuna.rc:root/ueventd.tuna.rc \
device/samsung/tuna/media_profiles.xml:system/etc/media_profiles.xml \
device/samsung/tuna/media_codecs.xml:system/etc/media_codecs.xml \
device/samsung/tuna/gps.conf:system/etc/gps.conf