MIPS: Remove soft-float support.

src/mips/constants-mips.h

Index: src/mips/constants-mips.h
diff --git a/src/mips/constants-mips.h b/src/mips/constants-mips.h
index 139e7db033c555adf6426674ac477bc21f190c25..5a0870fd21832bf3dc1eecf7c6ae4d699797fdb7 100644
--- a/src/mips/constants-mips.h
+++ b/src/mips/constants-mips.h
@@ -61,8 +61,9 @@ enum ArchVariants {
 // -mhard-float is passed to the compiler.
 const bool IsMipsSoftFloatABI = false;
 #elif(defined(__mips_soft_float) && __mips_soft_float != 0)
-// Not using floating-point coprocessor instructions. This flag is raised when
-// -msoft-float is passed to the compiler.
+// This flag is raised when -msoft-float is passed to the compiler.
+// Although FPU is a base requirement for v8, soft-float ABI is used
+// on soft-float systems with FPU kernel emulation.
 const bool IsMipsSoftFloatABI = true;
 #else
 const bool IsMipsSoftFloatABI = true;