Re: [flashrom] [PATCH] Revert MMIO space writes on shutdown as needed.

[Carl-Daniel Hailfinger]

New version with a few bugfixes and better comments:
- Do not use reversible writes for on-the-fly opcode menu reprogramming
- Add reversible PCI MMIO writes

Revert MMIO space writes on shutdown as needed.
Reversible MMIO space writes now use rmmio_write*().
Reversible PCI MMIO space writes now use pci_rmmio_write*().
If a MMIO value needs to be queued for restore without writing it,
use rmmio_val*().
MMIO space writes which are one-shot (e.g. communication with some chip)
should continue to use the permanent mmio_write* variants.

Signed-off-by: Carl-Daniel Hailfinger

Patch attached because Seamonkey started to mangle patches.