flash Kinetis: add KE1xZ and KE1xF families

The new Kinetis KE1x families use FTFE flash controller unlike KE0x.
Also SDID coding corresponds to new K, KL and KV families.
That's why KE1x is handled by kinetis driver instead of kinetis_ke

Change-Id: Ibb73e28e41dfbb086e761e1f006b089825dab854
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/3896


Tested-by: jenkins
Reviewed-by: Joakim Nohlgård <joakim.nohlgard@eistec.se>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>