Fix U-Boot compilation for MIPS boards using ELDK 4.0
diff --git a/common/cmd_ide.c b/common/cmd_ide.c
index 6663dea..b67d35a 100644
--- a/common/cmd_ide.c
+++ b/common/cmd_ide.c
@@ -49,7 +49,7 @@
 #include <asm/io.h>
 #ifdef __MIPS__
 /* Macros depend on this variable */
-static unsigned long mips_io_port_base = 0;
+unsigned long mips_io_port_base = 0;
 #endif
 #endif