m32r: Define THREAD_SIZE only once.

Previously, m32r's asm/thread_info.h defined THREAD_SIZE differently
for assembly and C code; now that PAGE_SIZE is usable from assembly,
these can be combined. Also, m32r's asm/processor.h redefines
THREAD_SIZE to the same value; remove this redundant definition.

Signed-off-by: Tim Abbott <[e-mail]>
Signed-off-by: Hirokazu Takata <[e-mail]>

arch/m32r/include/asm/processor.h

···
 #define KSTK_EIP(tsk)  ((tsk)->thread.lr)
 #define KSTK_ESP(tsk)  ((tsk)->thread.sp)
 
-#define THREAD_SIZE (2*PAGE_SIZE)
-
 #define cpu_relax()	barrier()
 
 #endif /* _ASM_M32R_PROCESSOR_H */

arch/m32r/include/asm/thread_info.h

···
 
 #define PREEMPT_ACTIVE		0x10000000
 
+#define THREAD_SIZE (PAGE_SIZE << 1)
+
 /*
  * macros/functions for gaining access to the thread information structure
  */
···
 
 #define init_thread_info	(init_thread_union.thread_info)
 #define init_stack		(init_thread_union.stack)
-
-#define THREAD_SIZE (2*PAGE_SIZE)
 
 /* how to get the thread information struct from C */
 static inline struct thread_info *current_thread_info(void)
···
 }
 
 #else /* !__ASSEMBLY__ */
-
-#define THREAD_SIZE	8192
 
 /* how to get the thread information struct from ASM */
 #define GET_THREAD_INFO(reg)	GET_THREAD_INFO reg