The flash is compatible with stm32f1x, reuse the driver. Extend the size of work area to RAM size of the smallest device. Stop watchdogs before flash programming. Change-Id: I67a7654a6e196f9d4b2409edaa7990c53334437e Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: https://review.openocd.org/c/openocd/+/6711 Tested-by: jenkins Reviewed-by: Tim Newsome <tim@sifive.com>