ANDROID: mm: Make page_owner_enabled global

Make page_owner_enabled variable global so that it
can be used by the minidump module to reserve memory
for page owner.

Bug: 177374907
Change-Id: Ib6189466c810321d109fa7d32773728215887e84
Signed-off-by: Vijayanand Jitta <vjitta@codeaurora.org>

mm/page_owner.c

@@ -31,7 +31,7 @@ struct page_owner {
 	pid_t pid;
 };
 
-static bool page_owner_enabled = false;
+bool page_owner_enabled;
 DEFINE_STATIC_KEY_FALSE(page_owner_inited);
 
 static depot_stack_handle_t dummy_handle;