Add a concept of entropy source strength.
The main goal is, we want and error if cycle counter is the only source.
diff --git a/include/mbedtls/error.h b/include/mbedtls/error.h
index 9244249..4f43018 100644
--- a/include/mbedtls/error.h
+++ b/include/mbedtls/error.h
@@ -61,9 +61,8 @@
* PADLOCK 1 0x0030-0x0030
* DES 1 0x0032-0x0032
* CTR_DBRG 4 0x0034-0x003A
- * ENTROPY 3 0x003C-0x0040
+ * ENTROPY 3 0x003C-0x0040 0x003D-0x003F
* NET 9 0x0042-0x0052 0x0043-0x0043
- * ENTROPY 1 0x0058-0x0058
* ASN1 7 0x0060-0x006C
* PBKDF2 1 0x007C-0x007C
* HMAC_DRBG 4 0x0003-0x0009