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

rocclr/device/rocm/rocdevice.cpp

@@ -769,7 +769,10 @@ bool Device::create() {
                    pciDeviceId_);
     return false;
   }
-
+  hsaSettings->limit_blit_wg_ = info().maxComputeUnits_;
+  if (!flagIsDefault(DEBUG_CLR_LIMIT_BLIT_WG)) {
+    hsaSettings->limit_blit_wg_ = std::max(DEBUG_CLR_LIMIT_BLIT_WG, 0x1U);
+  }
   amd::Context::Info info = {0};
   std::vector<amd::Device*> devices;
   devices.push_back(this);