microblaze: export some symbols

Some device drivers require the symbols _ebss, kernel_thread,
__page_offset or ___range_ok, so export them.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/kernel/microblaze_ksyms.c b/arch/microblaze/kernel/microblaze_ksyms.c
index 5f71790..59ff20e 100644
--- a/arch/microblaze/kernel/microblaze_ksyms.c
+++ b/arch/microblaze/kernel/microblaze_ksyms.c
@@ -45,3 +45,5 @@
 EXPORT_SYMBOL(__udivsi3);
 extern void __umodsi3(void);
 EXPORT_SYMBOL(__umodsi3);
+extern char *_ebss;
+EXPORT_SYMBOL_GPL(_ebss);