Fix beaEngine register names.

Former-commit-id: 6e825c69e067cc594a54fe9844686faefdb5975d

src/interfaces/irdb/STARS_IRDB_Op.cpp

@@ -152,11 +152,11 @@ no operands for eflags or mxcsr?
 */
 			switch(bea_regno)
 			{
-				case EFLAGS:
+				case REGISTER_TYPE + SPECIAL_REG + REG0:   // EFLAGS reg
 					OpType = op_Reg;
 					operand.reg.RegNum = STARS_x86_R_efl;
 					break;
-				case MXCSR:
+				case REGISTER_TYPE + SPECIAL_REG + REG1:   // MXCSR reg
 					OpType = op_Reg;
 					operand.reg.RegNum = STARS_x86_R_mxcsr;
 					break;