Fix out of bound read/write issue (intel#18137)

JIRA: CMPLRLLVM-54071
Cherry-pick from
https://github.com/intel-restricted/applications.compilers.llvm-project/pull/18047

Author: XinWang10

llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.h

@@ -948,7 +948,7 @@ struct InternalInstruction {
   // Immediates.  There can be two in some cases
   uint8_t                       numImmediatesConsumed;
   uint8_t                       numImmediatesTranslated;
-  uint64_t                      immediates[2];
+  uint64_t                      immediates[3]; // INTEL
 
   // A register or immediate operand encoded into the opcode
   Reg                           opcodeRegister;