Change the language for SB AES key sizes am: b04c67a938

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1817585

Change-Id: I8c19f2a29486baee1723b57fb0d313199a978646
diff --git a/security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl b/security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl
index 1849723..cd8cfc5 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl
@@ -96,7 +96,8 @@
  *
  * o   AES
  *
- *      - 128 and 256-bit keys
+ *      - TRUSTED_ENVIRONMENT IKeyMintDevices must support 128, 192 and 256-bit keys.
+ *        STRONGBOX IKeyMintDevices must only support 128 and 256-bit keys.
  *      - CBC, CTR, ECB and GCM modes.  The GCM mode must not allow the use of tags smaller than 96
  *        bits or nonce lengths other than 96 bits.
  *      - CBC and ECB modes must support unpadded and PKCS7 padding modes.  With no padding CBC and