[SYCL] Update DPCPP library major version (#6801)

Author: againull

clang/lib/Driver/CMakeLists.txt

@@ -18,7 +18,7 @@ endif()
 
 # This must be in sync with llvm/sycl/CMakeLists.txt.
 SET_SOURCE_FILES_PROPERTIES( ToolChains/MSVC.cpp ToolChains/Clang.cpp
-  PROPERTIES COMPILE_DEFINITIONS SYCL_MAJOR_VERSION="5" )
+  PROPERTIES COMPILE_DEFINITIONS SYCL_MAJOR_VERSION="6" )
 
 add_clang_library(clangDriver
   Action.cpp

sycl/CMakeLists.txt

@@ -27,12 +27,10 @@ include(SYCLUtils)
 
 # The change in SYCL_MAJOR_VERSION must be accompanied with the same update in
 # llvm/clang/lib/Driver/CMakeLists.txt.
-set(SYCL_MAJOR_VERSION 5)
-set(SYCL_MINOR_VERSION 7)
+set(SYCL_MAJOR_VERSION 6)
+set(SYCL_MINOR_VERSION 0)
 set(SYCL_PATCH_VERSION 0)
-# Don't forget to re-enable sycl_symbols_windows.dump once we leave ABI-breaking
-# window!
-set(SYCL_DEV_ABI_VERSION 18)
+set(SYCL_DEV_ABI_VERSION 0)
 if (SYCL_ADD_DEV_VERSION_POSTFIX)
   set(SYCL_VERSION_POSTFIX "-${SYCL_DEV_ABI_VERSION}")
 endif()