MIPS: Fix mina in mips32 and mips64 simulator

Fix mina instruction in mips32 and mips64 simulator according to IEEE 754-2008 standard

BUG=

Review URL: https://codereview.chromium.org/1402923002

Cr-Commit-Position: refs/heads/master@{#31243}

src/mips/simulator-mips.cc

@@ -2310,7 +2310,7 @@ void Simulator::DecodeTypeRegisterDRsType() {
         } else if (fabs(fs) < fabs(ft)) {
           result = fs;
         } else {
-          result = (fs > ft ? fs : ft);
+          result = (fs < ft ? fs : ft);
         }
         set_fpu_register_double(fd_reg(), result);
       }
@@ -3070,7 +3070,7 @@ void Simulator::DecodeTypeRegisterSRsType() {
         } else if (fabs(fs) < fabs(ft)) {
           result = fs;
         } else {
-          result = (fs > ft ? fs : ft);
+          result = (fs < ft ? fs : ft);
         }
         set_fpu_register_float(fd_reg(), result);
       }

src/mips64/simulator-mips64.cc

@@ -2481,7 +2481,7 @@ void Simulator::DecodeTypeRegisterSRsType() {
         } else if (fabs(fs) < fabs(ft)) {
           result = fs;
         } else {
-          result = (fs > ft ? fs : ft);
+          result = (fs < ft ? fs : ft);
         }
         set_fpu_register_float(fd_reg(), result);
       }
@@ -2690,7 +2690,7 @@ void Simulator::DecodeTypeRegisterDRsType() {
         } else if (fabs(fs) < fabs(ft)) {
           result = fs;
         } else {
-          result = (fs > ft ? fs : ft);
+          result = (fs < ft ? fs : ft);
         }
         set_fpu_register_double(fd_reg(), result);
       }