SWDEV-432174 - Change the fillBuffer kernel

- Add the new fillBuffer kernel, which allows to launch a limited
number of workgroups for memory fill operation
- Switch fill memory to 16 bytes write by default
- Allow to limit the workgroups with DEBUG_CLR_LIMIT_BLIT_WG

Change-Id: Ibad1822f2d42b2fc71bcfc1917c31409c0623e8e


[ROCm/clr commit: f1dc81f427]

projects/clr/rocclr/utils/flags.hpp

@@ -221,6 +221,8 @@ release(uint, ROC_AQL_QUEUE_SIZE, 16384,                                      \
         "AQL queue size in AQL packets")                                      \
 release(uint, ROC_SIGNAL_POOL_SIZE, 32,                                       \
         "Initial size of HSA signal pool")                                    \
+release(uint, DEBUG_CLR_LIMIT_BLIT_WG, 16,                                    \
+        "Limit the number of workgroups in blit operations")                  \
 release(bool, ROC_SKIP_KERNEL_ARG_COPY, false,                                \
         "If true, then runtime can skip kernel arg copy")                     \
 release(bool, GPU_STREAMOPS_CP_WAIT, false,                                   \