lunch: sort the choices

This will sort the lunch array when lunch is called,
giving us a consistent list of devices, which is easier
to search through

Change-Id: I80854e8b949950cbc928121a184b64fc3b8164c8

envsetup: lunch: always sort the menu

this fixes the use case of 'lunch 34' straight after envsetup

Change-Id: I19d45016edf254131015aab8476bc815bec9abe4