remove __attribute_used__

Remove the deprecated __attribute_used__.

[Introduce __section in a few places to silence checkpatch /sam]

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/include/asm-sh/thread_info.h b/include/asm-sh/thread_info.h
index c6577d3..c50e5d3 100644
--- a/include/asm-sh/thread_info.h
+++ b/include/asm-sh/thread_info.h
@@ -68,7 +68,7 @@
 #define init_stack		(init_thread_union.stack)
 
 /* how to get the current stack pointer from C */
-register unsigned long current_stack_pointer asm("r15") __attribute_used__;
+register unsigned long current_stack_pointer asm("r15") __used;
 
 /* how to get the thread information struct from C */
 static inline struct thread_info *current_thread_info(void)