fpga: tools: Fix escape sequence warnings

This adds to 11c60ee to fix a few additional escape sequence warnings.

fpga/usrp3/tools/scripts/viv_ip_retarget_subcores.py

@@ -15,6 +15,7 @@ import os
 import re
 import sys
 
+
 # Parse command line options
 def get_options():
     """Parse script arguments."""
@@ -55,16 +56,18 @@ def get_options():
 def get_match_str(item):
     """Produce the string to an XML parameter with a value."""
     return (
-        '(.*\<spirit:configurableElementValue spirit:referenceId=".*\.'
+        r'(.*\<spirit:configurableElementValue spirit:referenceId=".*\.'
         + item
-        + '"\>)(.+)(\</spirit:configurableElementValue\>)'
+        + r'"\>)(.+)(\</spirit:configurableElementValue\>)'
     )
 
 
 def get_empty_match_str(item):
     """Produce the string to an XML parameter without a value."""
     return (
-        '(.*\<spirit:configurableElementValue spirit:referenceId=".*\.' + item + '")/\>'
+        r'(.*\<spirit:configurableElementValue spirit:referenceId=".*\.'
+        + item
+        + r'")/\>'
     )
 
 

fpga/usrp3/tools/scripts/viv_ip_xci_editor.py

@@ -52,7 +52,7 @@ def parse_args():
 
 def get_top_level_match_str(tag_text):
     """Get the regex string to match a top-level tag."""
-    return r"(.*\<" + tag_text + "\>)(.+)(\</" + tag_text + r"\>)"
+    return r"(.*\<" + tag_text + r"\>)(.+)(\</" + tag_text + r"\>)"
 
 
 def get_match_str(item):