[NFC][SYCL] Convert zero-dim-host-accessor.cpp and bfloat16_host.cpp LIT test to unittests

Author: uditagarwal97

sycl/test/basic_tests/accessor/zero-dim-host-accessor.cpp

@@ -16,6 +16,7 @@ add_sycl_unittest(ExtensionsTests OBJECT
   KernelProperties.cpp
   NoDeviceIPVersion.cpp
   GetLastEvent.cpp
+  BFloat16.cpp
 )
 
 add_subdirectory(CommandGraph)

sycl/test/extensions/bfloat16_host.cpp

@@ -8,4 +8,5 @@ add_sycl_unittest(AccessorTests OBJECT
   HostAccessorReverseIterator.cpp
   LocalAccessorDefaultCtor.cpp
   RuntimeProperties.cpp
+  HostAccessor.cpp
 )