Move Images code to hsa-runtime folder

Change-Id: I53c1845d985ac3e9708d952865009c0021f3bb4f


[ROCm/ROCR-Runtime commit: 7e3db20826]

projects/rocr-runtime/runtime/hsa-runtime/image/blit_src/README.md

@@ -0,0 +1,61 @@
+## OVERVIEW
+
+This directory contains the CMakeLists.txt for automatically generating
+the ASCII code object file, "opencl_blit_objects.cpp", which contains the
+blobs of the code object of the Image BLIT kernels for the devices supported
+on ROCm.  The blobs are loaded by the image library and required to update
+whenever a new device is introduced.
+
+
+## ADD NEW DEVICE
+
+To add a new supported device, the following steps are required:
+
+  1. Declare an extern variable of the device XXX, by adding the line of
+     "extern uint32_t ocl_blit_object_gfxNNN[];" in "blit_kernel.cpp"
+  2. Update the BlitKernel::GetPatchedBlitObject() function to support the
+     device by assigning "blit_code_object" to "ocl_blit_object_gfxNNN[]"
+  3. Add the gfxNNN to the TARGET_DEVICES list in CMakeLists.txt
+  4. If the new device requires XNACK, add it to the XNACK_DEVS list in CMakeLists.txt
+  5. Rebuild the image library
+
+
+## REQUIREMENT
+
+In order to create the code object file, the bitcodes of the kernels are
+generated by the compiler and the following bitcode libraries are required,
+
+   opencl.amdgcn.bc
+   ocml.amdgcn.bc
+   irif.amdgcn.bc
+   oclc_correctly_rounded_sqrt_off.amdgcn.bc
+   oclc_daz_opt_on.amdgcn.bc
+   oclc_finite_only_off.amdgcn.bc
+   oclc_isa_version_<GFXIP>.amdgcn.bc
+   oclc_unsafe_math_off.amdgcn.bc
+
+where <GFXIP> is the gfxip number of the GPU. The directory contains the
+bitcode libraries is specified in a CMake varaible.
+
+There are several variables are required for CMake to build the code
+object file.  All of them have default values, and defined as following:
+
+      OPENCL_DIR - the location of installed OpenCL
+                   (Default: /opt/rocm/opencl)
+     BITCODE_DIR - the directory contains the bitcode library
+                   (Default: ${OPENCL_DIR}/lib/x86_64/bitcode)
+        LLVM_DIR - the directory contains the clang, llvm-link and llvm-dis
+                   executables
+                   (Default: ${PROJECT_BUILD_DIR}/../lightning/bin)
+  TARGET_DEVICES - list of gpu types for kernel builds (eg. "gfx900;gfx902")
+                   (Default: "gfx900;gfx902;gfx904")
+
+
+## STEPS TO BUILD
+
+  $ make build
+  $ cd build
+  $ cmake -D${OPENCL_DIR} -D${BITCODE_DIR} -D${LLVM_DIR} -D${TARGET_DEVICES} ..
+  $ make opencl_blit_objects.cpp
+
+