Disassembler: use the register names we generally use with our assembler.

runtime/vm/disassembler_mips.cc

Index: runtime/vm/disassembler_mips.cc
diff --git a/runtime/vm/disassembler_mips.cc b/runtime/vm/disassembler_mips.cc
index 78831a7407f3416d55cd8dd298c33c68a7ffce30..49fbb338d165786cc976b766d0421eab4453d4a5 100644
--- a/runtime/vm/disassembler_mips.cc
+++ b/runtime/vm/disassembler_mips.cc
@@ -79,10 +79,10 @@ void MIPSDecoder::Print(const char* str) {
 
 
 static const char* reg_names[kNumberOfCpuRegisters] = {
-  "r0" , "r1" , "r2" , "r3" , "r4" , "r5" , "r6" , "r7" ,
-  "r8" , "r9" , "r10", "r11", "r12", "r13", "r14", "r15",
-  "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
-  "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
+  "zr", "at", "v0", "v1" , "a0", "a1", "a2", "a3",
+  "t0", "t1", "t2", "t3" , "t4", "t5", "t6", "t7",
+  "s0", "s1", "s2", "thr", "s4", "s5", "s6", "pp",
+  "t8", "t9", "k0", "k1" , "gp", "sp", "fp", "ra",
 };