Fix no pop-up to notify user install sim card for usb tethering
Rootcause: If user hasn't install sim card before use usb tethering, need to pop-up a notify dialog. Solution: Check sim card status while start usb tethering, if false pop-up notify. Change-Id: I51366ef920056991a650528f33d7f7bbbed56235 CRs-fixed: 1064551
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