fix sparc32 breakage (result of vmlinux.lds.S bug)

In commit 4665079c ("[NETNS]: Move some
code into __init section when CONFIG_NET_NS=n") we got a new section -
.exit.text.refok (more of 'let's tell modpost that some bogus calls are
not bogus', a-la text.init.refok).

Unfortunately, the commit in question forgot to add it to TEXT_TEXT,
with rather amusing results.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/asm-generic/vmlinux.lds.h

@@ -153,7 +153,8 @@
 #define TEXT_TEXT							\
 		ALIGN_FUNCTION();					\
 		*(.text)						\
-		*(.text.init.refok)
+		*(.text.init.refok)					\
+		*(.exit.text.refok)
 
 /* sched.text is aling to function alignment to secure we have same
  * address even at second ld pass when generating System.map */