crypto: atmel-aes: Fixes for upstream

Fix checkpatch.pl and implicit warning fallthrough.

Add fallthrough macro to specify the compiler
that is an intentional fall-through case.

drivers/crypto/atmel-aes.c: In function ‘atmel_aes_get_cap’:
drivers/crypto/atmel-aes.c:2563:48: warning: this statement may fall through [-Wimplicit-fallthrough=]
2563 |                 dd->caps.has_6words_limitation = 1;
      |                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
drivers/crypto/atmel-aes.c:2564:9: note: here
2564 |         case 0x500:
      |         ^~~~

Fix checkpatch.pl warnings

WARNING: 'suppport' may be misspelled - perhaps 'support'?
FILE: drivers/crypto/atmel-aes.c:92

WARNING: line length of 103 exceeds 100 columns
FILE: drivers/crypto/atmel-aes.c:2138:
+        crypto_aead_set_flags(ctx->fallback, crypto_aead_get_flags(tfm) & CRYPTO_TFM_REQ_MASK)

Fixes: 4ade590 ("crypto: atmel-aes: Add fallback for unsupported ESP header length")
Signed-off-by: Andrei Simion <andrei.simion@microchip.com>
Reviewed-by: Cristian Birsan <cristian.birsan@microchip.com>

Author: Andrei Simion

drivers/crypto/atmel-aes.c

@@ -89,7 +89,7 @@
  * @has_dualbuff: dual buffer support
  * @has_cfb64: cfb64 support
  * @has_gcm: gcm support
- * @has_xts: xts suppport
+ * @has_xts: xts support
  * @has_authenc: authentication support
  * @max_burst_size: max DMA bust size
  * @has_6words_limitation: some versions of IP have a 6 word headder limitation
@@ -2135,7 +2135,9 @@ static int atmel_aes_authenc_setkey(struct crypto_aead *tfm, const u8 *key,
 
 	if (ctx->base.dd->caps.has_6words_limitation) {
 		crypto_aead_clear_flags(ctx->fallback, CRYPTO_TFM_REQ_MASK);
-		crypto_aead_set_flags(ctx->fallback, crypto_aead_get_flags(tfm) & CRYPTO_TFM_REQ_MASK);
+		crypto_aead_set_flags(ctx->fallback,
+				      crypto_aead_get_flags(tfm) &
+				      CRYPTO_TFM_REQ_MASK);
 		crypto_aead_setkey(ctx->fallback, key, keylen);
 	}
 	return 0;
@@ -2561,6 +2563,7 @@ static void atmel_aes_get_cap(struct atmel_aes_dev *dd)
 	case 0x700:
 	case 0x600:
 		dd->caps.has_6words_limitation = 1;
+		fallthrough;
 	case 0x500:
 		dd->caps.has_dualbuff = 1;
 		dd->caps.has_cfb64 = 1;