Move RSA_blinding_on out of BCM

May as well get this one out of the way.

Bug: 42290606
Change-Id: Ia67d5fecbdecc458b2c016c7a6563530bf21811a
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/75247
Commit-Queue: Bob Beck <bbe@google.com>
Auto-Submit: David Benjamin <davidben@google.com>
Reviewed-by: Bob Beck <bbe@google.com>

crypto/fipsmodule/rsa/rsa.cc.inc

diff --git a/crypto/fipsmodule/rsa/rsa.cc.inc b/crypto/fipsmodule/rsa/rsa.cc.inc
index 1b1ebd1..4e59964 100644
--- a/crypto/fipsmodule/rsa/rsa.cc.inc
+++ b/crypto/fipsmodule/rsa/rsa.cc.inc
@@ -976,5 +976,3 @@
 int RSA_flags(const RSA *rsa) { return rsa->flags; }
 
 int RSA_test_flags(const RSA *rsa, int flags) { return rsa->flags & flags; }
-
-int RSA_blinding_on(RSA *rsa, BN_CTX *ctx) { return 1; }

crypto/rsa_extra/rsa_extra.cc

diff --git a/crypto/rsa_extra/rsa_extra.cc b/crypto/rsa_extra/rsa_extra.cc
index a76db3f..ecf4122 100644
--- a/crypto/rsa_extra/rsa_extra.cc
+++ b/crypto/rsa_extra/rsa_extra.cc
@@ -14,4 +14,6 @@
 
 #include <openssl/rsa.h>
 
+int RSA_blinding_on(RSA *rsa, BN_CTX *ctx) { return 1; }
+
 void RSA_blinding_off(RSA *rsa) {}