Revert "Revert "Optimize easy multiply and easy div remainder.""

This reverts commit 3654a6f50a948ead89627f398aaf86a2c2db0088.
Remove the part of the change that confused !is_div with being multiply rather
than implying remainder.

Change-Id: I202610069c69351259a320e8852543cbed4c3b3e
diff --git a/compiler/dex/quick/x86/int_x86.cc b/compiler/dex/quick/x86/int_x86.cc
index 851f448..3b73082 100644
--- a/compiler/dex/quick/x86/int_x86.cc
+++ b/compiler/dex/quick/x86/int_x86.cc
@@ -909,6 +909,11 @@
   return false;
 }
 
+bool X86Mir2Lir::EasyMultiply(RegLocation rl_src, RegLocation rl_dest, int lit) {
+  LOG(FATAL) << "Unexpected use of easyMultiply in x86";
+  return false;
+}
+
 LIR* X86Mir2Lir::OpIT(ConditionCode cond, const char* guide) {
   LOG(FATAL) << "Unexpected use of OpIT in x86";
   return NULL;