ANDROID: vendor_hooks: Add hook in try_to_unmap_one()

Add hook in try_to_unmap_one() to trace this function for debug memory
swap bugs.

Bug: 198385827
Change-Id: I1fdbe60e09bb491b949e06a07133710453ecca03
Signed-off-by: Jiewen Wang <jiewen.wang@vivo.com>

mm/rmap.c

@@ -77,6 +77,8 @@
 
 #include <trace/events/tlb.h>
 
+#include <trace/hooks/mm.h>
+
 #include "internal.h"
 
 static struct kmem_cache *anon_vma_cachep;
@@ -1706,6 +1708,7 @@ discard:
 	}
 
 	mmu_notifier_invalidate_range_end(&range);
+	trace_android_vh_try_to_unmap_one(vma, page, address, ret);
 
 	return ret;
 }