[U-Boot] [PATCH] ColdFire: Fix missing _IO_BASE which caused compile error

[TsiChung Liew]

The compile error was caused by a recent patch. Affected platforms -
M5253DEMO.h, M5253EVBE.h, and M54455EVB.h. Adding the _IO_BASE
automatically defined to 0 in asm-m68k/io.h if it isn't set in
platform configuration file.

Signed-off-by: TsiChung Liew <tsicliew at gmail.com>
---
 include/asm-m68k/io.h |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/include/asm-m68k/io.h b/include/asm-m68k/io.h
index 50ea087..531f420 100644
--- a/include/asm-m68k/io.h
+++ b/include/asm-m68k/io.h
@@ -28,6 +28,10 @@
 
 #include <asm/byteorder.h>
 
+#ifndef _IO_BASE
+#define _IO_BASE 0
+#endif
+
 #define __raw_readb(addr) (*(volatile u8 *)(addr))
 #define __raw_readw(addr) (*(volatile u16 *)(addr))
 #define __raw_readl(addr) (*(volatile u32 *)(addr))
-- 
1.5.6.4