v5: add disassembler support for EWRITE{1,2,4}_EXT_OPCODE

Test: TH
Change-Id: I1e5371dad4e803dacceb94a225aa112dfcf53ccf
diff --git a/disassembler.c b/disassembler.c
index f544a40..b3668a1 100644
--- a/disassembler.c
+++ b/disassembler.c
@@ -270,13 +270,9 @@
                         print_opcode("transmit");
                     }
                     break;
-                case EWRITE1_EXT_OPCODE:
-                case EWRITE2_EXT_OPCODE:
-                case EWRITE4_EXT_OPCODE: {
-                    print_opcode("write");
-                    bprintf("r%d, %d", reg_num, 1 << (imm - EWRITE1_EXT_OPCODE));
-                    break;
-                }
+                case EWRITE1_EXT_OPCODE: print_opcode("ewrite1"); bprintf("r%d", reg_num); break;
+                case EWRITE2_EXT_OPCODE: print_opcode("ewrite2"); bprintf("r%d", reg_num); break;
+                case EWRITE4_EXT_OPCODE: print_opcode("ewrite4"); bprintf("r%d", reg_num); break;
                 case EDATACOPY_EXT_OPCODE:
                 case EPKTCOPY_EXT_OPCODE: {
                     if (imm == EPKTCOPY_EXT_OPCODE) {