Renumber TLS 1.3 signature algorithms.

The old numbers violate a MUST-level requirement in TLS 1.2 to not
advertise anonymous (0x0700 ends in 0x00). The spec has been updated
with new allocations which avoid these.

BUG=webrtc:6342

Change-Id: Ia5663ada98fa1ebf0f8a7f50fe74a0e9206c4194
Reviewed-on: https://boringssl-review.googlesource.com/11131
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/include/openssl/ssl.h b/include/openssl/ssl.h
index 1e76df3..d7e5add 100644
--- a/include/openssl/ssl.h
+++ b/include/openssl/ssl.h
@@ -908,9 +908,9 @@
 #define SSL_SIGN_ECDSA_SECP256R1_SHA256 0x0403
 #define SSL_SIGN_ECDSA_SECP384R1_SHA384 0x0503
 #define SSL_SIGN_ECDSA_SECP521R1_SHA512 0x0603
-#define SSL_SIGN_RSA_PSS_SHA256 0x0700
-#define SSL_SIGN_RSA_PSS_SHA384 0x0701
-#define SSL_SIGN_RSA_PSS_SHA512 0x0702
+#define SSL_SIGN_RSA_PSS_SHA256 0x0804
+#define SSL_SIGN_RSA_PSS_SHA384 0x0805
+#define SSL_SIGN_RSA_PSS_SHA512 0x0806
 
 /* SSL_SIGN_RSA_PKCS1_MD5_SHA1 is an internal signature algorithm used to
  * specify raw RSASSA-PKCS1-v1_5 with an MD5/SHA-1 concatenation, as used in TLS