sm8350-common: lower number of media volume steps

vendor.prop

@@ -246,8 +246,8 @@ media.stagefright.thumbnail.prefer_hw_codecs=true
 mmp.enable.3g2=true
 persist.demo.hdmirotationlock=false
 persist.mm.enable.prefetch=true
-ro.config.media_vol_default=100
-ro.config.media_vol_steps=150
+ro.config.media_vol_default=15
+ro.config.media_vol_steps=25
 ro.config.vc_call_vol_steps=11
 ro.vendor.media.video.frc.support=true
 ro.vendor.media.video.vpp.support=true