linkage.h: move from blackfin to common includes

1. Add linkage.h support from blackfin to common include,
   which is a reduced version from Linux.
2. Add architecture part support of linkage.h into blackfin
3. Fix include path of in blackfin related to linkage.h
   due to header file movement.

Signed-off-by: Macpaul Lin <macpaul@andestech.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/include/asm/blackfin_local.h b/arch/blackfin/include/asm/blackfin_local.h
index 71207b6..49d0c9e 100644
--- a/arch/blackfin/include/asm/blackfin_local.h
+++ b/arch/blackfin/include/asm/blackfin_local.h
@@ -48,7 +48,7 @@
 #define L1_CACHE_SHIFT 5
 #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
 
-#include <asm/linkage.h>
+#include <linux/linkage.h>
 #include <asm/cache.h>
 
 #ifndef __ASSEMBLY__
diff --git a/arch/blackfin/include/asm/cache.h b/arch/blackfin/include/asm/cache.h
index 482e4b5..568885a 100644
--- a/arch/blackfin/include/asm/cache.h
+++ b/arch/blackfin/include/asm/cache.h
@@ -7,7 +7,7 @@
 #ifndef __ARCH_BLACKFIN_CACHE_H
 #define __ARCH_BLACKFIN_CACHE_H
 
-#include <asm/linkage.h>	/* for asmlinkage */
+#include <linux/linkage.h>	/* for asmlinkage */
 
 /*
  * Bytes per L1 cache line
diff --git a/arch/blackfin/include/asm/linkage.h b/arch/blackfin/include/asm/linkage.h
index fbb497c..6d4493a 100644
--- a/arch/blackfin/include/asm/linkage.h
+++ b/arch/blackfin/include/asm/linkage.h
@@ -22,53 +22,7 @@
  * MA 02110-1301 USA
  */
 
-#ifndef _LINUX_LINKAGE_H
-#define _LINUX_LINKAGE_H
-
-#include <linux/config.h>
-
-#ifdef __cplusplus
-#define CPP_ASMLINKAGE		extern "C"
-#else
-#define CPP_ASMLINKAGE
-#endif
-
-#define asmlinkage CPP_ASMLINKAGE
-
-#define SYMBOL_NAME_STR(X)	#X
-#define SYMBOL_NAME(X)		X
-#ifdef __STDC__
-#define SYMBOL_NAME_LABEL(X)	X##:
-#else
-#define SYMBOL_NAME_LABEL(X)	X:
-#endif
-
-#define __ALIGN .align		4
-#define __ALIGN_STR		".align 4"
-
-#ifdef __ASSEMBLY__
-
-#define ALIGN			__ALIGN
-#define ALIGN_STR		__ALIGN_STR
-
-#define LENTRY(name) \
-	ALIGN; \
-	SYMBOL_NAME_LABEL(name)
-
-#define ENTRY(name) \
-	.globl SYMBOL_NAME(name); \
-	LENTRY(name)
-#endif
-
-#ifndef END
-#define END(name) \
-	.size name, .-name
-#endif
-
-#ifndef ENDPROC
-#define ENDPROC(name) \
-	.type name, @function; \
-	END(name)
-#endif
+#ifndef __ASM_LINKAGE_H
+#define __ASM_LINKAGE_H
 
 #endif