Merge branch 'ndk/eamxx/use-small-kernels-for-alvarez-gpu' into next (PR #7467)

Use small kernels for alvarez-gpu in same way we do for pm-gpu.
Only impacts alvarez-gpu where we aren't running tests.
[bfb]

Author: ndkeen

components/eamxx/cmake/machine-files/alvarez-gpu.cmake

@@ -21,6 +21,8 @@ include (${EKAT_MACH_FILES_PATH}/mpi/srun.cmake)
 #option(Kokkos_ARCH_AMPERE80 "" ON)
 set(CMAKE_CXX_FLAGS "-DTHRUST_IGNORE_CUB_VERSION_CHECK" CACHE STRING "" FORCE)
 
+option(SCREAM_SMALL_KERNELS "Use small, non-monolothic kokkos kernels for ALL components that support them" ON)
+
 message(STATUS "alvarez-gpu CMAKE_CXX_COMPILER_ID=${CMAKE_CXX_COMPILER_ID} CMAKE_Fortran_COMPILER_VERSION=${CMAKE_Fortran_COMPILER_VERSION}")
 if ("${PROJECT_NAME}" STREQUAL "E3SM")
   if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")