Bug in am29f040b.c causes flash device not to be recognised

[Peter Fox]

The following patch needs to be applied to am29f040b.c in the
utils/flash_and_burn directory:

----------------------
--- am29f040b-nv.c	Wed Nov  5 14:33:34 2003
+++ am29f040b.c	Wed Nov  5 14:20:26 2003
@@ -76,8 +76,8 @@
    *(bios + 0x2AA) = 0x55;
    *(bios + 0x555) = 0x90;

-	id1 = *(unsigned char *) bios;
-	id2 = *(unsigned char *) (bios + 0x01);
+	id1 = *(volatile unsigned char *) bios;
+	id2 = *(volatile unsigned char *) (bios + 0x01);

*bios = 0xF0;

----------------------

My C compiler was reordering the writes and reads, so that
the flash wasn't ready to give an id when the reads occurred.

I notice that all the other flash devices already seem to have
this correct.