sm8350-common: Allow overriding content detection refresh rate props

There is a visible gamma shift when switching to high refresh rate on
some devices where it's poorly tuned (like haydn). Since its fine for
properly tuned devices (like renoir/lisa) lets keep these props here
and override on devices where its necessary.

Change-Id: Ie120376e330edfef59a4a535545ac7c014a3b557

vendor.prop

@@ -174,9 +174,9 @@ ro.surface_flinger.has_wide_color_display=true
 ro.surface_flinger.max_frame_buffer_acquired_buffers=3
 ro.surface_flinger.max_virtual_display_dimension=4096
 ro.surface_flinger.protected_contents=true
-ro.surface_flinger.set_touch_timer_ms=200
+ro.surface_flinger.set_touch_timer_ms?=200
 ro.surface_flinger.use_color_management=true
-ro.surface_flinger.use_content_detection_for_refresh_rate=true
+ro.surface_flinger.use_content_detection_for_refresh_rate?=true
 ro.surface_flinger.wcg_composition_dataspace=143261696
 ro.vendor.sf.enable_fb_scaling=1
 vendor.display.comp_mask=0