[MIPS] Add build support for MIPS in openssl.gyp

openssl.gypi

 # Auto-generated file - DO NOT EDIT
 # To regenerate - run import_from_android.sh.
 # See 'import_from_android.sh --help' for details.
 {
   'variables': {
     'openssl_common_sources': [
       'openssl/crypto/cryptlib.c',
       'openssl/crypto/mem.c',
       'openssl/crypto/mem_clr.c',
       'openssl/crypto/mem_dbg.c',
@@ skipping 558 matching lines @@
     ],
     'openssl_arm_defines': [
       'OPENSSL_BN_ASM_GF2m',
       'OPENSSL_BN_ASM_MONT',
       'GHASH_ASM',
       'AES_ASM',
       'SHA1_ASM',
       'SHA256_ASM',
       'SHA512_ASM',
     ],
+    'openssl_mips_source_excludes': [
+      'openssl/crypto/aes/aes_core.c',
+      'openssl/crypto/bn/bn_asm.c',
+    ],
+    'openssl_mips_sources': [
+      'openssl/crypto/aes/asm/aes-mips.S',
+      'openssl/crypto/bn/asm/bn-mips.S',
+      'openssl/crypto/bn/asm/mips-mont.S',
+      'openssl/crypto/sha/asm/sha1-mips.S',
+      'openssl/crypto/sha/asm/sha256-mips.S',
+    ],
+    'openssl_mips_defines': [
+      'OPENSSL_BN_ASM_MONT',
+      'AES_ASM',
+      'SHA1_ASM',
+      'SHA256_ASM',
+    ],
     'openssl_x86_source_excludes': [
       'openssl/crypto/aes/aes_core.c',
       'openssl/crypto/aes/aes_cbc.c',
       'openssl/crypto/bf/bf_enc.c',
       'openssl/crypto/bn/bn_asm.c',
       'openssl/crypto/des/des_enc.c',
       'openssl/crypto/des/fcrypt_b.c',
       'openssl/crypto/mem_clr.c',
     ],
     'openssl_x86_sources': [
@@ skipping 64 matching lines @@
       'SHA256_ASM',
       'SHA512_ASM',
       'MD5_ASM',
       'DES_PTR',
       'DES_RISC1',
       'DES_UNROLL',
       'OPENSSL_CPUID_OBJ',
     ],
   }
 }