E.g. STM32F7 implements Rev.2. Supercedes abandoned patch 2755 that doesn't evaluate Flash patch revision. Change-Id: I48756b0451c7359475066969c900978a536bc328 Signed-off-by: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de> Reviewed-on: http://openocd.zylin.com/2868 Tested-by: jenkins Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>