Blackfin: boards: update AD183x resources

Make sure we use the right Kconfig names and platform strings.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/mach-bf537/boards/stamp.c b/arch/blackfin/mach-bf537/boards/stamp.c
index a3f172f..126a407 100644
--- a/arch/blackfin/mach-bf537/boards/stamp.c
+++ b/arch/blackfin/mach-bf537/boards/stamp.c
@@ -980,7 +980,7 @@
 		.modalias = "ad183x",
 		.max_speed_hz = 3125000,     /* max spi clock (SCK) speed in HZ */
 		.bus_num = 0,
-		.chip_select = 4,/* CONFIG_SND_BLACKFIN_SPI_PFBIT */
+		.chip_select = 4,
 		.platform_data = "ad1836", /* only includes chip name for the moment */
 		.controller_data = &ad1836_spi_chip_info,
 		.mode = SPI_MODE_3,