Merge pull request ARMmbed#77 from ARMmbed/creat-cmsis-pack

Add CC3220SF to arm-pack-manager index

Author: linlingao

targets/targets.json

@@ -4526,6 +4526,7 @@
         "components": ["SD"],
         "device_has": ["USTICKER", "LPTICKER", "SERIAL", "SERIAL_FC", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "INTERRUPTIN", "SPI", "ANALOGIN", "FLASH", "TRNG"],
         "core": "Cortex-M4",
-        "bootloader_supported": true
+        "bootloader_supported": true,
+        "device_name": "CC3220SF"
     }
 }