crypto: lib/aes - export sbox and inverse sbox

There are a few copies of the AES S-boxes floating around, so export
the ones from the AES library so that we can reuse them in other
modules.
Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

include/crypto/aes.h

@@ -67,4 +67,7 @@ void aes_encrypt(const struct crypto_aes_ctx *ctx, u8 *out, const u8 *in);
  */
 void aes_decrypt(const struct crypto_aes_ctx *ctx, u8 *out, const u8 *in);
 
+extern const u8 crypto_aes_sbox[];
+extern const u8 crypto_aes_inv_sbox[];
+
 #endif

lib/crypto/aes.c

@@ -82,6 +82,12 @@ static volatile const u8 __cacheline_aligned aes_inv_sbox[] = {
 	0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d,
 };
 
+extern const u8 crypto_aes_sbox[256] __alias(aes_sbox);
+extern const u8 crypto_aes_inv_sbox[256] __alias(aes_inv_sbox);
+
+EXPORT_SYMBOL(crypto_aes_sbox);
+EXPORT_SYMBOL(crypto_aes_inv_sbox);
+
 static u32 mul_by_x(u32 w)
 {
 	u32 x = w & 0x7f7f7f7f;