sm8450-common: Add missing xiaomi ecc list to vendor

Change-Id: If442b92d42b518a0119c0ac6151069ff7f6e15f9

proprietary-files.txt

@@ -710,6 +710,8 @@ vendor/etc/telephony_packages.xml
 vendor/etc/vintf/manifest/dataconnection-saidl.xml
 vendor/etc/vintf/manifest/qtiradio-saidl.xml
 vendor/etc/vintf/manifest/vendor.qti.hardware.radio.ims.xml
+vendor/etc/xiaomi_ecc_list.xml
+vendor/etc/xiaomi_ecc_list_preference.xml
 vendor/lib64/[email protected]
 vendor/lib64/[email protected]
 vendor/lib64/[email protected]