trab: rename spi_init()

The local board-specific spi_init() function conflicts with the common SPI
layer, so rename it to something board-specific.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/board/trab/trab_fkt.c b/board/trab/trab_fkt.c
index 53cdb5a..74cdbfc 100644
--- a/board/trab/trab_fkt.c
+++ b/board/trab/trab_fkt.c
@@ -729,7 +729,7 @@
 	int brightness;
 
 	/* initialize SPI */
-	spi_init ();
+	tsc2000_spi_init ();
 
 	if  (((brightness = simple_strtoul (argv[2], NULL, 10)) < 0) ||
 	     (brightness > 255)) {