[PATCH i-g-t v2 1/2] i915/perf: Fix invalid escape warnings

["José Roberto de Souza" <jose.souza@intel.com>]

Fix this warnings:
SyntaxWarning: invalid escape sequence '\

A similar change was done in the Xe KMD script in commit
287917575616 ("xe/oa: Fix invalid escape warnings").

Cc: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
 lib/i915/perf-configs/mdapi-xml-convert.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/i915/perf-configs/mdapi-xml-convert.py b/lib/i915/perf-configs/mdapi-xml-convert.py
index ba0b7ba473..db093b60f6 100755
--- a/lib/i915/perf-configs/mdapi-xml-convert.py
+++ b/lib/i915/perf-configs/mdapi-xml-convert.py
@@ -222,7 +222,7 @@ counter_blacklist = {
 
 def underscore(name):
     s = re.sub('MHz', 'Mhz', name)
-    s = re.sub('\.', '_', s)
+    s = re.sub(r'\.', '_', s)
     s = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', s)
     s = re.sub('#', '_', s)
     return re.sub('([a-z0-9])([A-Z])', r'\1_\2', s).lower()
-- 
2.47.0