Fix a bunch of lint.

There are still about 1800 lint warnings, so don't get too excited...

Change-Id: I2394bd6e750b94060231378b3a7a88b87f70c757
diff --git a/src/compiler/codegen/mips/Assemble.cc b/src/compiler/codegen/mips/Assemble.cc
index 39ad36b..25e13d7 100644
--- a/src/compiler/codegen/mips/Assemble.cc
+++ b/src/compiler/codegen/mips/Assemble.cc
@@ -674,7 +674,7 @@
           break;
         case kFmtDfp: {
           DCHECK(DOUBLEREG(operand));
-          DCHECK((operand & 0x1) == 0);
+          DCHECK_EQ((operand & 0x1), 0U);
           value = ((operand & FP_REG_MASK) << encoder->fieldLoc[i].start) &
               ((1 << (encoder->fieldLoc[i].end + 1)) - 1);
           bits |= value;