Add config for tire pressure display units

Bug: 154751939
Test: aae app vhal apply google
// verify property included in dump
adb -s c3139966 shell dumpsys activity service com.android.car get-carpropertyconfig | grep TIRE_PRESSURE_DISPLAY_UNITS -A5

Change-Id: Id7a3ad7351db5a4f03ab3a29fa06e9c82321a44e
1 file changed