[Pal/Linux-SGX] Rewrite link-intel-driver.py in Python3

Pal/src/host/Linux-SGX/sgx-driver

@@ -1 +1 @@
-Subproject commit 53458f3368bcf6820fbe54c68c58725355800699
+Subproject commit a9b1a30468cffa7102c8b2b1c84c60d03037a702

README.rst

@@ -54,7 +54,7 @@ Run the following command on Ubuntu to install dependencies for Graphene::
 
 For building Graphene for SGX, run the following command in addition::
 
-    sudo apt-get install -y python-protobuf libprotobuf-c-dev protobuf-c-compiler
+    sudo apt-get install -y python3-protobuf libprotobuf-c-dev protobuf-c-compiler
 
 To run tests locally, you also need the python3-pytest package::