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/mcp6x_spi.c b/mcp6x_spi.c
index 20e9bd8..38e9a8b 100644
--- a/mcp6x_spi.c
+++ b/mcp6x_spi.c
@@ -156,7 +156,7 @@
 		 (status >> MCP6X_SPI_GRANT) & 0x1);
 	mcp_gpiostate = status & 0xff;
 
-	if (bitbang_spi_init(&bitbang_spi_master_mcp6x)) {
+	if (register_spi_bitbang_master(&bitbang_spi_master_mcp6x)) {
 		/* This should never happen. */
 		msg_perr("MCP6X bitbang SPI master init failed!\n");
 		return 1;