Allocate the smem used to pass info to modem when under JB bl

- unlike KK, JB sbl3 does not reserve the shared memory for us,
  so we need to actually allocate it ourselves
- set the mmi unit info version to 1 as that's what our JB modem
  firmware is likely to expect

Change-Id: I34e8a21250f05938d7c9f37a8a83d5983ddd7a4c