OTA: back to life

Change-Id: I8dccc3d8288cedf0a40635f62fa5ec34b6f8f0a3
OTA: RemixPA OTA 1.0 (1/2)

This OTA System is based on Mokee,thanks and credits to mokee

1.adapt changes for remixpa
2.remove gen_ota_all
3.disable log
4.code cleanup

Change-Id: Id4c83613b9c5b7c98aad5c314c37935bd86a364f