Address comments

Change-Id: Idbaada0753a9d46cfd94f71fcb30c7f7a8a1d17d

Author: NicolaLancellotti

gallery/how_to/work_with_microtvm/install_cmsis.rst

@@ -33,3 +33,7 @@ Install CMSIS-NN
         wget ${CMSIS_URL} -O "${DOWNLOAD_PATH}"
         tar -xf "${DOWNLOAD_PATH}" -C ${CMSIS_PATH} --strip-components=1
         rm ${DOWNLOAD_PATH}
+
+        CMSIS_NN_TAG="v4.0.0"
+        CMSIS_NN_URL="https://github.com/ARM-software/CMSIS-NN.git"
+        git clone ${CMSIS_NN_URL} --branch ${CMSIS_NN_TAG} --single-branch ${CMSIS_PATH}/CMSIS-NN

gallery/how_to/work_with_microtvm/micro_aot.py

@@ -46,19 +46,14 @@
 # By default, this tutorial runs on x86 CPU using TVM's C runtime. If you would like
 # to run on real Zephyr hardware, you must export the `TVM_MICRO_USE_HW` environment
 # variable. Otherwise (if you are using the C runtime), you can skip installing
-# Zephyr and CMSIS-NN. It takes ~20 minutes to install both of them.
+# Zephyr. It takes ~20 minutes to install Zephyr.
 use_physical_hw = bool(os.getenv("TVM_MICRO_USE_HW"))
 
 ######################################################################
 #
 #     .. include:: ../../../../gallery/how_to/work_with_microtvm/install_zephyr.rst
 #
 
-######################################################################
-#
-#     .. include:: ../../../../gallery/how_to/work_with_microtvm/install_cmsis.rst
-#
-
 ######################################################################
 # Import Python dependencies
 # -------------------------------

gallery/how_to/work_with_microtvm/micro_autotune.py

@@ -38,7 +38,7 @@
 testing.utils.install_request_hook(depth=3)
 # sphinx_gallery_end_ignore
 
-# You can skip the following two sections (installing Zephyr and CMSIS-NN) if the following flag is False.
+# You can skip the following section (installing Zephyr) if the following flag is False.
 # Installing Zephyr takes ~20 min.
 import os
 
@@ -49,10 +49,6 @@
 #     .. include:: ../../../../gallery/how_to/work_with_microtvm/install_zephyr.rst
 #
 
-######################################################################
-#
-#     .. include:: ../../../../gallery/how_to/work_with_microtvm/install_cmsis.rst
-#
 
 ######################################################################
 # Import Python dependencies

gallery/how_to/work_with_microtvm/micro_tflite.py

@@ -41,19 +41,14 @@
 # By default, this tutorial runs on x86 CPU using TVM's C runtime. If you would like
 # to run on real Zephyr hardware, you must export the `TVM_MICRO_USE_HW` environment
 # variable. Otherwise (if you are using the C runtime), you can skip installing
-# Zephyr and CMSIS-NN. It takes ~20 minutes to install both of them.
+# Zephyr. It takes ~20 minutes to install Zephyr.
 use_physical_hw = bool(os.getenv("TVM_MICRO_USE_HW"))
 
 ######################################################################
 #
 #     .. include:: ../../../../gallery/how_to/work_with_microtvm/install_zephyr.rst
 #
 
-######################################################################
-#
-#     .. include:: ../../../../gallery/how_to/work_with_microtvm/install_cmsis.rst
-#
-
 ######################################################################
 # Import Python dependencies
 # -------------------------------