UPSTREAM: crypto: lib/chacha20poly1305 - Add missing function declaration

This patch adds a declaration for chacha20poly1305_selftest to
silence a sparse warning.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit 06cc2afbbdf9a9e8df3e2f8db724997dd6e1b4ac)
Bug: 152722841
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I9dc1c6df2e73e6a60d81f24384e8363309d6d109

include/crypto/chacha20poly1305.h

@@ -45,4 +45,6 @@ bool chacha20poly1305_decrypt_sg_inplace(struct scatterlist *src, size_t src_len
 					 const u64 nonce,
 					 const u8 key[CHACHA20POLY1305_KEY_SIZE]);
 
+bool chacha20poly1305_selftest(void);
+
 #endif /* __CHACHA20POLY1305_H */

lib/crypto/chacha20poly1305.c

@@ -21,8 +21,6 @@
 
 #define CHACHA_KEY_WORDS	(CHACHA_KEY_SIZE / sizeof(u32))
 
-bool __init chacha20poly1305_selftest(void);
-
 static void chacha_load_key(u32 *k, const u8 *in)
 {
 	k[0] = get_unaligned_le32(in);