Handle OpImage (#3316)
The instruction is being replaced with Image operand of OpSampledImage.
Fixes https://github.com/KhronosGroup/SPIRV-LLVM-Translator/issues/3302
Signed-off-by: Sidorov, Dmitry <dmitry.sidorov@intel.com>
Original commit:
https://github.com/KhronosGroup/SPIRV-LLVM-Translator/commit/4474c8a38813c43