grpc: Link with libatomic on riscv

Signed-off-by: Khem Raj <raj.khem@gmail.com>
(cherry picked from commit e82f1802a60d451f978cdef0f2ff69feb1f12039)
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-networking/recipes-devtools/grpc/grpc_1.24.1.bb

@@ -48,6 +48,14 @@ do_configure_prepend_powerpc() {
     sed -i -e "s/set(_gRPC_ALLTARGETS_LIBRARIES \${CMAKE_DL_LIBS} rt m pthread)/set(_gRPC_ALLTARGETS_LIBRARIES \${CMAKE_DL_LIBS} atomic rt m pthread)/g" ${S}/CMakeLists.txt
 }
 
+do_configure_prepend_riscv64() {
+    sed -i -e "s/set(_gRPC_ALLTARGETS_LIBRARIES \${CMAKE_DL_LIBS} rt m pthread)/set(_gRPC_ALLTARGETS_LIBRARIES \${CMAKE_DL_LIBS} atomic rt m pthread)/g" ${S}/CMakeLists.txt
+}
+
+do_configure_prepend_riscv32() {
+    sed -i -e "s/set(_gRPC_ALLTARGETS_LIBRARIES \${CMAKE_DL_LIBS} rt m pthread)/set(_gRPC_ALLTARGETS_LIBRARIES \${CMAKE_DL_LIBS} atomic rt m pthread)/g" ${S}/CMakeLists.txt
+}
+
 do_configure_prepend_toolchain-clang_x86() {
     sed -i -e "s/set(_gRPC_ALLTARGETS_LIBRARIES \${CMAKE_DL_LIBS} rt m pthread)/set(_gRPC_ALLTARGETS_LIBRARIES \${CMAKE_DL_LIBS} atomic rt m pthread)/g" ${S}/CMakeLists.txt
 }