Optimize easy multiply and easy div remainder.

Update OpRegRegShift and OpRegRegRegShift to use RegStorage parameters.
Add special cases for *0 and *1. Add more easy multiply special cases for
Arm.
Reuse easy multiply in SmallLiteralDivRem() to support remainder cases.

Change-Id: Icd76a993d3ac8d4988e9653c19eab4efca14fad0
diff --git a/compiler/dex/quick/mips/int_mips.cc b/compiler/dex/quick/mips/int_mips.cc
index dfe8b35..270d895 100644
--- a/compiler/dex/quick/mips/int_mips.cc
+++ b/compiler/dex/quick/mips/int_mips.cc
@@ -368,6 +368,11 @@
   return false;
 }
 
+bool MipsMir2Lir::EasyMultiply(RegLocation rl_src, RegLocation rl_dest, int lit) {
+  LOG(FATAL) << "Unexpected use of easyMultiply in Mips";
+  return false;
+}
+
 LIR* MipsMir2Lir::OpIT(ConditionCode cond, const char* guide) {
   LOG(FATAL) << "Unexpected use of OpIT in Mips";
   return NULL;