mobicore: t-base-200 Remove dynamic assignement

Use cdevs instead of relying on the dynamic assignment of a
misc minor device. Make version information from buildTag.h
available in release version of kernel module.

Change-Id: I8f98828556067ae7c62bfef6767e7667569b79a3
Signed-off-by: Oana Medvesan <medvesan.oana@gmail.com>
[hnamgund@codeaurora.org: Drop changes to mobicore_driver/main.c
to align with other branches]
Signed-off-by: Hariprasad Dhalinarasimha <hnamgund@codeaurora.org>
Acked-by: Tony Hamilton <tonyh@qti.qualcomm.com>