Add a few FIXME comments to the generic SPI code

Corresponding to flashrom svn r814.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/spi.c b/spi.c
index a2b26c5..43dc4bf 100644
--- a/spi.c
+++ b/spi.c
@@ -807,6 +807,7 @@
 	int result;
 	struct spi_command cmds[] = {
 	{
+	/* FIXME: WRSR requires either EWSR or WREN depending on chip type. */
 		.writecnt	= JEDEC_EWSR_OUTSIZE,
 		.writearr	= (const unsigned char[]){ JEDEC_EWSR },
 		.readcnt	= 0,
@@ -1059,6 +1060,7 @@
 		fprintf(stderr, "ERASE FAILED!\n");
 		return -1;
 	}
+	/* FIXME: This will fail on ICH/VIA SPI. */
 	result = spi_write_enable();
 	if (result)
 		return result;