This change add option '--name' to the patch builder
script allowing user to select the desired file name for the
patch file. If the 'name' option is not provided, file name will
default to patch id from the recipe.
Test plan:
PASS: Build patch with --name parameter
e.g: python3 patch_builder --recipe recipe.xml --name filename.patch
PASS: Build patch without --name parameter
e.g: python3 patch_builder --recipe recipe.xml
Story: 2010676
Task: 49858
Change-Id: Ia9b936d44ef83e6ff3d9561b22ae045fb2891f33