Replace passing in struct target with passing in struct flash_bank,
so that the later can contain function pointers to custom per-driver
memory accessor functions.
Change-Id: Id2573a6d5f1a73ed9c4f73c53592a9a335a11c99
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Reviewed-on: http://openocd.zylin.com/5146
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>