Make high refresh rate show up for Xiaomi Civi

Some new Mi devices only reveal high refresh rate on `ro.product.manufacturer=Xiaomi`
Until the offending blob is pinpointed, fake the prop with copyprop
Feel free to experiment on other devices with similar symptom

Change-Id: I125cc55d6c3d57d7e62c65c997de086cca24abdd

rw-system.sh

@@ -695,14 +695,13 @@ fi
 
 setprop ctl.stop console
 dmesg -n 1
-if [ -f /system/phh/secure ] || [ -f /metadata/phh/secure ];then
 copyprop() {
     p="$(getprop "$2")"
     if [ "$p" ]; then
         resetprop_phh "$1" "$(getprop "$2")"
     fi
 }
-
+if [ -f /system/phh/secure ] || [ -f /metadata/phh/secure ];then
     copyprop ro.build.device ro.vendor.build.device
     copyprop ro.system.build.fingerprint ro.vendor.build.fingerprint
     copyprop ro.bootimage.build.fingerprint ro.vendor.build.fingerprint
@@ -1047,3 +1046,7 @@ fi
 if [ -f /vendor/bin/ccci_rpcd ];then
     setprop debug.phh.props.ccci_rpcd vendor
 fi
+
+if getprop ro.vendor.build.fingerprint | grep -qi -e iaomi/mona; then
+    copyprop ro.product.manufacturer ro.product.vendor.manufacturer
+fi