Added nnlib-FusionG3 submodule from FOSS-xtensa git space

Signed-off-by: [email protected] <[email protected]>

Author: [email protected]

.gitmodules

@@ -64,3 +64,6 @@
 [submodule "third-party/pybind11"]
 	path = third-party/pybind11
 	url = https://github.com/pybind/pybind11.git
+[submodule "backends/cadence/fusion_g3/third-party/nnlib/nnlib-FusionG3"]
+	path = backends/cadence/fusion_g3/third-party/nnlib/nnlib-FusionG3
+	url = https://github.com/foss-xtensa/nnlib-FusionG3/

backends/cadence/fusion_g3/third-party/nnlib/CMakeLists.txt

@@ -5,7 +5,7 @@ add_custom_target(
   nnlib_target ALL
   COMMAND
     make install_nnlib -f makefile -C
-    ${EXECUTORCH_ROOT}/backends/cadence/fusion_g3/third-party/nnlib/nnlib-FuG3/xa_nnlib/build
+    ${EXECUTORCH_ROOT}/backends/cadence/fusion_g3/third-party/nnlib/nnlib-FusionG3/xa_nnlib/build
     OBJDIR=${CMAKE_CURRENT_BINARY_DIR}/obj
     LIBDIR=${CMAKE_CURRENT_BINARY_DIR}/lib -j8
 )