Address review: set keyInstalled in FREESCALE_LTC/MMCAU key setup (F-6151)

The keyInstalled guard added to the shared aes.c mode functions is set by
every in-aes.c key-schedule branch except FREESCALE_LTC and FREESCALE_MMCAU.
Their wc_AesSetKeyLocal installs the key but left keyInstalled at 0, so any
guarded AES mode that falls through to a shared aes.c path returned an error
after a valid key setup on those ports.

Set keyInstalled at the key-install point in both branches, matching the
other ports fixed earlier in this PR.

Author: julek-wolfssl

wolfcrypt/src/aes.c

@@ -4650,6 +4650,7 @@ static WARN_UNUSED_RESULT int wc_AesDecrypt(Aes* aes, const byte* inBlock,
 
         aes->rounds = keylen/4 + 6;
         XMEMCPY(aes->key, userKey, keylen);
+        aes->keyInstalled = 1;
 
     #if defined(WOLFSSL_AES_COUNTER) || defined(WOLFSSL_AES_CFB) || \
         defined(WOLFSSL_AES_OFB) || defined(WOLFSSL_AES_XTS) || \
@@ -5158,6 +5159,8 @@ static WARN_UNUSED_RESULT int wc_AesDecrypt(Aes* aes, const byte* inBlock,
         #endif
             wolfSSL_CryptHwMutexUnLock();
 
+            aes->keyInstalled = 1;
+
             ret = wc_AesSetIV(aes, iv);
         }