utils: ipc: mojom_libcamera_generator.py: Fix Python warning

Python 3.12 starts emitting the following warning when building libcamera:

  .../utils/ipc/generators/mojom_libcamera_generator.py:372:
  SyntaxWarning: invalid escape sequence '\.'
    if not re.match('^ipa\.[0-9A-Za-z_]+', namespace):

`r' prefix is now required before the regexp.

Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

0 files changed, 0 insertions, 0 deletions