[AMDGPU] Remove int types from isSISrcFPOperand (#67401)

This is NFCI, I don't believe there are any instructions using packed
types in the ins dag, only in patterns, and the affected function is
only used in the asm parser. However, int types shall not be reported as
fp types.

This may be usesul if we create an asm syntax for packed fp literals
which we currently don't. If/when we do it that shall affect if we
accept FP modifiers on these types or not. Say we could create a syntax
like v2(-lit1, |lit2|) that would matter then.

Author: rampitec

llvm/lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.cpp

@@ -2237,16 +2237,13 @@ bool isSISrcFPOperand(const MCInstrDesc &Desc, unsigned OpNo) {
   case AMDGPU::OPERAND_REG_IMM_FP16:
   case AMDGPU::OPERAND_REG_IMM_FP16_DEFERRED:
   case AMDGPU::OPERAND_REG_IMM_V2FP16:
-  case AMDGPU::OPERAND_REG_IMM_V2INT16:
   case AMDGPU::OPERAND_REG_INLINE_C_FP32:
   case AMDGPU::OPERAND_REG_INLINE_C_FP64:
   case AMDGPU::OPERAND_REG_INLINE_C_FP16:
   case AMDGPU::OPERAND_REG_INLINE_C_V2FP16:
-  case AMDGPU::OPERAND_REG_INLINE_C_V2INT16:
   case AMDGPU::OPERAND_REG_INLINE_AC_FP32:
   case AMDGPU::OPERAND_REG_INLINE_AC_FP16:
   case AMDGPU::OPERAND_REG_INLINE_AC_V2FP16:
-  case AMDGPU::OPERAND_REG_INLINE_AC_V2INT16:
   case AMDGPU::OPERAND_REG_IMM_V2FP32:
   case AMDGPU::OPERAND_REG_INLINE_C_V2FP32:
   case AMDGPU::OPERAND_REG_INLINE_AC_FP64: