[U-Boot] [PATCH] arm/kirkwood: protect the ENV_SPI #defines

[Holger Brunck]

From: Valentin Longchamp <valentin.longchamp at keymile.com>

So that they can be redefined by some boards specific values.

Signed-off-by: Valentin Longchamp <valentin.longchamp at keymile.com>
Signed-off-by: Holger Brunck <holger.brunck at keymile.com>
cc: Prafulla Wadaskar <prafulla at marvell.com>
---
Hi Prafulla,
here is the only common kirkwood related change from our patch serie,
as discussed on the ml.

 arch/arm/include/asm/arch-kirkwood/config.h |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/arch/arm/include/asm/arch-kirkwood/config.h b/arch/arm/include/asm/arch-kirkwood/config.h
index 91164eb..a9499b7 100644
--- a/arch/arm/include/asm/arch-kirkwood/config.h
+++ b/arch/arm/include/asm/arch-kirkwood/config.h
@@ -82,9 +82,15 @@
 #ifdef CONFIG_CMD_SF
 #define CONFIG_HARD_SPI			1
 #define CONFIG_KIRKWOOD_SPI		1
-#define CONFIG_ENV_SPI_BUS		0
-#define CONFIG_ENV_SPI_CS		0
-#define CONFIG_ENV_SPI_MAX_HZ		50000000	/*50Mhz */
+#ifndef CONFIG_ENV_SPI_BUS
+# define CONFIG_ENV_SPI_BUS		0
+#endif
+#ifndef CONFIG_ENV_SPI_CS
+# define CONFIG_ENV_SPI_CS		0
+#endif
+#ifndef CONFIG_ENV_SPI_MAX_HZ
+# define CONFIG_ENV_SPI_MAX_HZ		50000000
+#endif
 #endif
 
 /*
-- 
1.7.1