aes.c: clean up and fix wrong comment in #endif

Signed-off-by: Yanray Wang <yanray.wang@arm.com>
diff --git a/library/aes.c b/library/aes.c
index 47a5e3e..753bc78 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -122,8 +122,8 @@
     0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68,
     0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16
 };
-#endif /* !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) || \
-          !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
+#endif /* !MBEDTLS_AES_ENCRYPT_ALT || !MBEDTLS_AES_SETKEY_ENC_ALT ||
+          !MBEDTLS_AES_SETKEY_DEC_ALT */
 
 /*
  * Forward tables
@@ -216,7 +216,7 @@
 
 #endif /* !MBEDTLS_AES_FEWER_TABLES */
 
-#endif /* !defined(MBEDTLS_AES_ENCRYPT_ALT) */
+#endif /* !MBEDTLS_AES_ENCRYPT_ALT */
 
 #undef FT
 
@@ -259,7 +259,7 @@
     0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26,
     0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D
 };
-#endif /* defined(MBEDTLS_AES_DECRYPT_ALT)) */
+#endif /* !MBEDTLS_AES_DECRYPT_ALT */
 
 /*
  * Reverse tables
@@ -353,7 +353,7 @@
 
 #endif /* !MBEDTLS_AES_FEWER_TABLES */
 
-#endif /* !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
+#endif /* !MBEDTLS_AES_DECRYPT_ALT || !MBEDTLS_AES_SETKEY_DEC_ALT */
 
 #undef RT
 
@@ -367,7 +367,7 @@
     0x00000010, 0x00000020, 0x00000040, 0x00000080,
     0x0000001B, 0x00000036
 };
-#endif /* !defined(MBEDTLS_AES_SETKEY_ENC_ALT) */
+#endif /* !MBEDTLS_AES_SETKEY_ENC_ALT */
 
 #else /* MBEDTLS_AES_ROM_TABLES */
 
@@ -377,8 +377,8 @@
 #if !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) || \
     !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
 static unsigned char FSb[256];
-#endif /* !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) || \
-          !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
+#endif /* !MBEDTLS_AES_ENCRYPT_ALT || !MBEDTLS_AES_SETKEY_ENC_ALT ||
+          !MBEDTLS_AES_SETKEY_DEC_ALT */
 #if !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT)
 static uint32_t FT0[256];
 #if !defined(MBEDTLS_AES_FEWER_TABLES)
@@ -386,14 +386,14 @@
 static uint32_t FT2[256];
 static uint32_t FT3[256];
 #endif /* !MBEDTLS_AES_FEWER_TABLES */
-#endif /* !defined(MBEDTLS_AES_ENCRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_ENC_ALT) */
+#endif /* !MBEDTLS_AES_ENCRYPT_ALT || !MBEDTLS_AES_SETKEY_ENC_ALT */
 
 /*
  * Reverse S-box & tables
  */
-#if !(defined(MBEDTLS_AES_SETKEY_ENC_ALT) && defined(MBEDTLS_AES_DECRYPT_ALT))
+#if !defined(MBEDTLS_AES_SETKEY_ENC_ALT) || !defined(MBEDTLS_AES_DECRYPT_ALT)
 static unsigned char RSb[256];
-#endif /* !(defined(MBEDTLS_AES_SETKEY_ENC_ALT) && defined(MBEDTLS_AES_DECRYPT_ALT)) */
+#endif /* !MBEDTLS_AES_SETKEY_ENC_ALT || !MBEDTLS_AES_DECRYPT_ALT */
 
 #if !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
 static uint32_t RT0[256];
@@ -402,7 +402,7 @@
 static uint32_t RT2[256];
 static uint32_t RT3[256];
 #endif /* !MBEDTLS_AES_FEWER_TABLES */
-#endif /* !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
+#endif /* !MBEDTLS_AES_DECRYPT_ALT || !MBEDTLS_AES_SETKEY_DEC_ALT */
 
 #if !defined(MBEDTLS_AES_SETKEY_ENC_ALT)
 /*
@@ -494,11 +494,11 @@
         RT2[i] = ROTL8(RT1[i]);
         RT3[i] = ROTL8(RT2[i]);
 #endif /* !MBEDTLS_AES_FEWER_TABLES */
-#endif /* !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
+#endif /* !MBEDTLS_AES_DECRYPT_ALT || !MBEDTLS_AES_SETKEY_DEC_ALT */
     }
 }
 
-#endif /* !defined(MBEDTLS_AES_SETKEY_ENC_ALT) */
+#endif /* !MBEDTLS_AES_SETKEY_ENC_ALT */
 
 #undef ROTL8
 
@@ -615,8 +615,8 @@
 
     return 0;
 }
-#endif /* defined(MAY_NEED_TO_ALIGN) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) || \
-          !defined(MBEDTLS_AES_SETKEY_ENC_ALT) */
+#endif /* MAY_NEED_TO_ALIGN || !MBEDTLS_AES_SETKEY_DEC_ALT ||
+          !MBEDTLS_AES_SETKEY_ENC_ALT */
 
 /*
  * AES key schedule (encryption)