[AST] USB Observe, Clocks & POR_NI logic update

Signed-off-by: Jacob Levy <jacob.levy@nuvoton.com>
diff --git a/.gitignore b/.gitignore
index da9b11d..1b08471 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,7 @@
 *~
 *.bak
+*.swp
+*.swo
 tags
 __pycache__
 /.vscode