sm7125: Increase volume steps to 30

Enabling dolby increases volume. Increase more volume steps to be able to control it better.

vendor.prop

@@ -59,6 +59,7 @@ vendor.audio.feature.concurrent_capture.enable=false
 vendor.audio.feature.maxx_audio.enable=false
 vendor.audio.feature.audiozoom.enable=false
 vendor.audio.feature.incall_music.enable=true
+ro.config.media_vol_steps=30
 ro.config.vc_call_vol_steps=8
 
 # Bluetooth