ppc: move exports to definitions

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/powerpc/lib/copypage_64.S b/arch/powerpc/lib/copypage_64.S
index a3c4dc4..21367b3 100644
--- a/arch/powerpc/lib/copypage_64.S
+++ b/arch/powerpc/lib/copypage_64.S
@@ -10,6 +10,7 @@
 #include <asm/processor.h>
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
+#include <asm/export.h>
 
         .section        ".toc","aw"
 PPC64_CACHES:
@@ -110,3 +111,4 @@
 	std	r11,120(r3)
 	std	r12,128(r3)
 	blr
+EXPORT_SYMBOL(copy_page)