serprog: Fix FWH/LPC by implementing serprog_map

The serprog protocol does only transmit 24 bit-wide address and ignores the
top 8 bit. This is fine as long as the underlying hardware ignores the latter
anyway (which is the case for parallel chips that even lack the respective pins).
FWH/LPC chips, however, operate on a full 32-bit (LPC) or 28-bit (FWH) address
space and would fail with the fallback mapping to NULL.

Corresponding to flashrom svn r1895.

Signed-off-by: Urja Rannikko <urjaman@gmail.com>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
diff --git a/flashrom.c b/flashrom.c
index a389cb2..d51a44c 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -212,7 +212,7 @@
 					/* FIXME */
 		.devs.note		= "All programmer devices speaking the serprog protocol\n",
 		.init			= serprog_init,
-		.map_flash_region	= fallback_map,
+		.map_flash_region	= serprog_map,
 		.unmap_flash_region	= fallback_unmap,
 		.delay			= serprog_delay,
 	},