sm7250-common: perf: Enable the pre-rendering feature

* Pre-rendering feature can improve FPS and reduce the janks
   in scrolling cases.

Signed-off-by: aswin7469 <aswinas@pixysos.com>

system.prop

@@ -88,6 +88,9 @@ ro.vendor.product.device.db=OP_DEVICE
 ro.vendor.qti.core_ctl_max_cpu=4
 ro.vendor.qti.core_ctl_min_cpu=2
 
+# Pre-Rendering
+ro.vendor.perf.scroll_opt=true
+
 # Radio
 persist.sys.fflag.override.settings_provider_model=false
 ro.telephony.default_network=33,33