Add rules to build armv7m_crc.inc and include it via preprocessor.
Change-Id: I4482c7acb8454de28bdf210d9f06c0720ada490a
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-on: http://openocd.zylin.com/3474
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>