Switch SST49LF004A/B to block erase, remove the hack which simulated (unsupported) chip erase

Annotate SST49LF004B quirks for TBL#.

Add TEST_OK_PRW which is useful when a PREW chip gets a new erase
routine.

Change a few erase function prototypes to use unsigned int instead of
int.

Corresponding to flashrom svn r731.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Luc Verhaegen <libv@skynet.be>
4 files changed