ANDROID: mm: Export si_swapinfo

Export si_swapinfo symbol which is used as part
of meminfo collection from minidump module.

Bug: 176277894
Change-Id: I5dc1672ce649c22dc33d4a544ee5a38f8376becf
Signed-off-by: Vijayanand Jitta <vjitta@codeaurora.org>

mm/swapfile.c

@@ -3426,6 +3426,7 @@ void si_swapinfo(struct sysinfo *val)
 	val->totalswap = total_swap_pages + nr_to_be_unused;
 	spin_unlock(&swap_lock);
 }
+EXPORT_SYMBOL_GPL(si_swapinfo);
 
 /*
  * Verify that a swap entry is valid and increment its swap map count.