Rename CHIP_BUSTYPE_FOO to BUS_FOO

It's shorter to type, and we have less problems with the 80 column limit.

Corresponding to flashrom svn r1396.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
diff --git a/spi.c b/spi.c
index 5d2e441..f02f091 100644
--- a/spi.c
+++ b/spi.c
@@ -195,5 +195,5 @@
 void register_spi_programmer(const struct spi_programmer *pgm)
 {
 	spi_programmer = pgm;
-	buses_supported |= CHIP_BUSTYPE_SPI;
+	buses_supported |= BUS_SPI;
 }