Unexport the idp_flags constants

Avoid polluting the global namespace a bit. The idp_flags field itself
is private, so it is impossible for a caller to do anything useful with
it.

Change-Id: I5853e72a3f37a93c75fb73ed5d7ca467b9ba01a3
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/63939
Reviewed-by: Bob Beck <bbe@google.com>
Commit-Queue: David Benjamin <davidben@google.com>

crypto/x509/internal.h

@@ -206,6 +206,22 @@ typedef struct {
 // an |X509_NAME|.
 DECLARE_ASN1_FUNCTIONS(X509_CRL_INFO)
 
+// Values in idp_flags field
+// IDP present
+#define IDP_PRESENT 0x1
+// IDP values inconsistent
+#define IDP_INVALID 0x2
+// onlyuser true
+#define IDP_ONLYUSER 0x4
+// onlyCA true
+#define IDP_ONLYCA 0x8
+// onlyattr true
+#define IDP_ONLYATTR 0x10
+// indirectCRL true
+#define IDP_INDIRECT 0x20
+// onlysomereasons present
+#define IDP_REASONS 0x40
+
 struct X509_crl_st {
   // actual signature
   X509_CRL_INFO *crl;

include/openssl/x509v3.h

@@ -308,24 +308,6 @@ struct ISSUING_DIST_POINT_st {
   int onlyattr;
 };
 
-// Values in idp_flags field
-// IDP present
-#define IDP_PRESENT 0x1
-// IDP values inconsistent
-#define IDP_INVALID 0x2
-// onlyuser true
-#define IDP_ONLYUSER 0x4
-// onlyCA true
-#define IDP_ONLYCA 0x8
-// onlyattr true
-#define IDP_ONLYATTR 0x10
-// indirectCRL true
-#define IDP_INDIRECT 0x20
-// onlysomereasons present
-#define IDP_REASONS 0x40
-
-
-
 // X509_PURPOSE stuff
 
 #define EXFLAG_BCONS 0x1