zero: rilchip: handle empty SVC status as stopped
zero: rilchip: handle empty SVC status as stopped

Change-Id: Ic9bfde1a0b3591116d466bbecef69122d4f22420

TeamNexus/android_device_samsung_zero-common,TeamNexus/android_device_samsung_zero-common,TeamNexus/android_device_samsung_zero-common,TeamNexus/android_device_samsung_zero-common,TeamNexus/android_device_samsung_zero-common