Configure asmjs and wasm as generic, 32-bit machines.

Change-Id: Ia4fdd1eb848abacf43e18f6741ffa4ff79e40fd8
Reviewed-on: https://boringssl-review.googlesource.com/26664
Commit-Queue: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>

include/openssl/base.h

diff --git a/include/openssl/base.h b/include/openssl/base.h
index 8db72d8..bd41d11 100644
--- a/include/openssl/base.h
+++ b/include/openssl/base.h
@@ -104,6 +104,10 @@
 #elif defined(__pnacl__)
 #define OPENSSL_32_BIT
 #define OPENSSL_PNACL
+#elif defined(__wasm__)
+#define OPENSSL_32_BIT
+#elif defined(__asmjs__)
+#define OPENSSL_32_BIT
 #elif defined(__myriad2__)
 #define OPENSSL_32_BIT
 #else