sections: fix section conflicts in arch/sh

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/sh/include/asm/io.h

@@ -134,7 +134,7 @@ __BUILD_MEMORY_STRING(__raw_, q, u64)
  * load/store instructions. sh_io_port_base is the virtual address to
  * which all ports are being mapped.
  */
-extern const unsigned long sh_io_port_base;
+extern unsigned long sh_io_port_base;
 
 static inline void __set_io_port_base(unsigned long pbase)
 {

arch/sh/kernel/ioport.c

@@ -11,7 +11,7 @@
 #include <linux/module.h>
 #include <linux/io.h>
 
-const unsigned long sh_io_port_base __read_mostly = -1;
+unsigned long sh_io_port_base __read_mostly = -1;
 EXPORT_SYMBOL(sh_io_port_base);
 
 void __iomem *__ioport_map(unsigned long addr, unsigned int size)