Add support for ROI decode on MI300 (#53)

* Add support for ROI decode on MI300

* Add ROI decode support for batched decoding

* clean up

* clean up

* Fix a typo and update sample's readme

samples/jpegDecode/README.md

@@ -22,5 +22,6 @@ make -j
                                                          1 for hybrid JPEG decoding using CPU and GPU HIP kernels (currently not supported)) [optional - default: 0]>
              -fmt   <[output format] - select rocJPEG output format for decoding, one of the [native, yuv, y, rgb, rgb_planar] [optional - default: native]>
              -o     <[output path] - path to an output file or a path to a directory - write decoded images to a file or directory based on selected output format [optional]>
+            -crop  <[crop rectangle] - crop rectangle for output in a comma-separated format: left,top,right,bottom - [optional]>
              -d     <[device id] - specify the GPU device id for the desired device (use 0 for the first device, 1 for the second device, and so on); [optional - default: 0]>
 ```