Add preprocessor bits for the EDK2 target.

Change-Id: I93abd9fffa70f8c4254dd23f2532afc4b752df96
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/70069
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Auto-Submit: Adam Langley <agl@google.com>

crypto/internal.h

diff --git a/crypto/internal.h b/crypto/internal.h
index 6d5736d..89d1e80 100644
--- a/crypto/internal.h
+++ b/crypto/internal.h
@@ -217,7 +217,9 @@
 // __uint128_t division depends on intrinsics in the compiler runtime. Those
 // intrinsics are missing in clang-cl (https://crbug.com/787617) and nanolibc.
 // These may be bugs in the toolchain definition, but just disable it for now.
-#if !defined(_MSC_VER) && !defined(OPENSSL_NANOLIBC)
+// EDK2's toolchain is missing __udivti3 (b/339380897) so cannot support
+// 128-bit division currently.
+#if !defined(_MSC_VER) && !defined(OPENSSL_NANOLIBC) && !defined(__EDK2_BORINGSSL__)
 #define BORINGSSL_CAN_DIVIDE_UINT128
 #endif
 #endif