dm: tegra: spi: Convert to driver model

This converts the Tegra SPI drivers to use driver model. This is tested
on:

- Tegra20 - trimslice
- Tegra30 - beaver
- Tegra124 - dalmore

(not tested on Tegra124)

Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/tegra-common-post.h b/include/configs/tegra-common-post.h
index 23e3c8a..a258699 100644
--- a/include/configs/tegra-common-post.h
+++ b/include/configs/tegra-common-post.h
@@ -59,7 +59,7 @@
 	BOARD_EXTRA_ENV_SETTINGS
 
 #if defined(CONFIG_TEGRA20_SFLASH) || defined(CONFIG_TEGRA20_SLINK) || defined(CONFIG_TEGRA114_SPI)
-#define CONFIG_FDT_SPI
+#define CONFIG_TEGRA_SPI
 #endif
 
 /* overrides for SPL build here */