msm: fsm_bbif: Add error messages to ioctls

Add meaningful error messages and fix break statements in
ioctl command.

Change-Id: Iaf193e6fc420eff48a90f67484a653450f892bc8
Acked-by: Edward Rodrigues <erodrigu@qti.qualcomm.com>
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>