pollux: centralize safe firmware

Change-Id: I95e86272a7404088cbe11a340c04fea7b24e1485
pollux: remove unused blob

Change-Id: I977a50ad162dc42afbd2a726f5d8fb34dada4750
pollux: split to support Wifi and 3G

Change-Id: Ie6b607b7c68c6e6403fcf581f7835063a7833d87
pollux: remove unused file

Change-Id: I378f0d9f33c3261505ea9adb750d4b7837188d32