tegra: spi: rename tegra SPI drivers

Rename tegra SPI drivers to tegra20_flash and tegra20_slink in
preparation for commonization and addition of tegra114_spi.

Signed-off-by: Allen Martin <amartin@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/include/asm/arch-tegra/tegra_spi.h b/arch/arm/include/asm/arch-tegra20/tegra20_sflash.h
similarity index 96%
rename from arch/arm/include/asm/arch-tegra/tegra_spi.h
rename to arch/arm/include/asm/arch-tegra20/tegra20_sflash.h
index d53a93f..26a8402 100644
--- a/arch/arm/include/asm/arch-tegra/tegra_spi.h
+++ b/arch/arm/include/asm/arch-tegra20/tegra20_sflash.h
@@ -22,8 +22,8 @@
  * MA 02111-1307 USA
  */
 
-#ifndef _TEGRA_SPI_H_
-#define _TEGRA_SPI_H_
+#ifndef _TEGRA20_SPI_H_
+#define _TEGRA20_SPI_H_
 
 #include <asm/types.h>
 
@@ -72,4 +72,4 @@
 #define SPI_TIMEOUT		1000
 #define TEGRA_SPI_MAX_FREQ	52000000
 
-#endif	/* _TEGRA_SPI_H_ */
+#endif	/* _TEGRA20_SPI_H_ */
diff --git a/arch/arm/include/asm/arch-tegra/tegra_slink.h b/arch/arm/include/asm/arch-tegra20/tegra20_slink.h
similarity index 96%
rename from arch/arm/include/asm/arch-tegra/tegra_slink.h
rename to arch/arm/include/asm/arch-tegra20/tegra20_slink.h
index 74804b5..afa9b36 100644
--- a/arch/arm/include/asm/arch-tegra/tegra_slink.h
+++ b/arch/arm/include/asm/arch-tegra20/tegra20_slink.h
@@ -22,8 +22,8 @@
  * MA 02111-1307 USA
  */
 
-#ifndef _TEGRA_SLINK_H_
-#define _TEGRA_SLINK_H_
+#ifndef _TEGRA30_SPI_H_
+#define _TEGRA30_SPI_H_
 
 #include <asm/types.h>
 
@@ -81,4 +81,4 @@
 #define SPI_TIMEOUT		1000
 #define TEGRA_SPI_MAX_FREQ	52000000
 
-#endif	/* _TEGRA_SLINK_H_ */
+#endif	/* _TEGRA30_SPI_H_ */