Add JNI trampoline for mips32.

This patch allows the browser to come up.

Change-Id: Icad9da868be76d6a08e615807fad8678ac0a110f
diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index 05785a8..0dbfdda 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -1967,6 +1967,7 @@
     case kArm:
     case kArm64:
     case kThumb2:
+    case kMips:
     case kX86:
     case kX86_64: return true;
     default: return false;