Multibyte SPI write for the Bus Pirate

Corresponding to flashrom svn r964.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Sean Nelson <audiohacked@gmail.com>
diff --git a/spi.c b/spi.c
index 41bb8f3..8bbbe6e 100644
--- a/spi.c
+++ b/spi.c
@@ -108,7 +108,7 @@
 		.command = buspirate_spi_send_command,
 		.multicommand = default_spi_send_multicommand,
 		.read = buspirate_spi_read,
-		.write_256 = spi_chip_write_1,
+		.write_256 = buspirate_spi_write_256,
 	},
 #endif