sm6250-common: Add property for timecheck timeout duration.

Timecheck timeout set to 20sec based on the property
vendor.audio.hal.boot.timeout.ms before system is ready.
It updates to default timeout of 5sec once the system
is ready.

Change-Id: I6d13eb8b8d06f279261cbcb81053f9a1389d073e

vendor.prop

@@ -105,6 +105,7 @@ vendor.audio.tunnel.encode=false
 vendor.audio.use.sw.alac.decoder=true
 vendor.audio.use.sw.ape.decoder=true
 vendor.audio.volume.headset.gain.depcal=true
+vendor.audio.hal.boot.timeout.ms=20000
 vendor.audio_hal.in_period_size=144
 vendor.audio_hal.period_multiplier=3
 vendor.audio_hal.period_size=192