Adding PRR protection for MRC settings and RO area of Flash BUG=chromium:1040046 TEST=run in developer and non-developer mode and verify that the right sections are write protected Change-Id: Icdeda00bc98d8ba6834490c6a3f0ca86d326a754 Signed-off-by: [email protected] Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/2039492 Reviewed-by: Furquan Shaikh <[email protected]> Commit-Queue: Furquan Shaikh <[email protected]> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/2044929