Rename programmer registration functions

Register_programmer suggests that we register a programmer. However,
that function registers a master for a given bus type, and a programmer
may support multiple masters (e.g. SPI, FWH). Rename a few other
functions to be more consistent.

Corresponding to flashrom svn r1831.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
diff --git a/nicintel_spi.c b/nicintel_spi.c
index 25bfa8f..cb4a61a 100644
--- a/nicintel_spi.c
+++ b/nicintel_spi.c
@@ -207,7 +207,7 @@
 	if (register_shutdown(nicintel_spi_shutdown, NULL))
 		return 1;
 
-	if (bitbang_spi_init(&bitbang_spi_master_nicintel))
+	if (register_spi_bitbang_master(&bitbang_spi_master_nicintel))
 		return 1;
 
 	return 0;