Constify flashchips array

This moves 99.5% of the .data section to .rodata (which ends up in .text).

Corresponding to flashrom svn r1293.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

flashchips.c

@@ -32,7 +32,7 @@
  * Please keep the list sorted by vendor name and chip name, so that
  * the output of 'flashrom -L' is alphabetically sorted.
  */
-struct flashchip flashchips[] = {
+const struct flashchip flashchips[] = {
 
 	/*
 	 * .vendor		= Vendor name