stm32f4: Cleanup reset reg constants
stm32f4: Cleanup reset reg constants

This brings no function change.

BRANCH=hatch
BUG=none
TEST=make buildall -j

Change-Id: I9a9363d4771039244ed79408674a598f768075e9
Signed-off-by: Craig Hesling <383db090fd8ef907a606ac8a9eccd2962bc489cf@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1958846
Reviewed-by: Daisuke Nojiri <fd5f93af191bf7e8f73ea71cc3c0f66b41b1dd49@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec