parisc: export copy_user_page_asm

Needed by fuse (via copy_highpage).
Signed-off-by: NKyle McMartin <kyle@mcmartin.ca>

arch/parisc/kernel/parisc_ksyms.c

@@ -152,3 +152,6 @@ EXPORT_SYMBOL($$dyncall);
 EXPORT_SYMBOL(node_data);
 EXPORT_SYMBOL(pfnnid_map);
 #endif
+
+/* from pacache.S -- needed for copy_page */
+EXPORT_SYMBOL(copy_user_page_asm);