Reduce size of SYCL_CACHE_TRACE's input to 4 bytes

Author: uditagarwal97

sycl/source/detail/config.def

@@ -26,7 +26,7 @@ CONFIG(SYCL_PROGRAM_APPEND_COMPILE_OPTIONS, 64, __SYCL_PROGRAM_APPEND_COMPILE_OP
 CONFIG(SYCL_HOST_UNIFIED_MEMORY, 1, __SYCL_HOST_UNIFIED_MEMORY)
 // 260 (Windows limit) - 12 (filename) - 84 (cache directory structure)
 CONFIG(SYCL_CACHE_DIR, 164, __SYCL_CACHE_DIR)
-CONFIG(SYCL_CACHE_TRACE, 16, __SYCL_CACHE_TRACE)
+CONFIG(SYCL_CACHE_TRACE, 4, __SYCL_CACHE_TRACE)
 CONFIG(SYCL_CACHE_DISABLE_PERSISTENT, 1, __SYCL_CACHE_DISABLE_PERSISTENT)
 CONFIG(SYCL_CACHE_PERSISTENT, 1, __SYCL_CACHE_PERSISTENT)
 CONFIG(SYCL_CACHE_EVICTION_DISABLE, 1, __SYCL_CACHE_EVICTION_DISABLE)