feature-microblaze-versions.inc: python 3.12 regex

feature-microblaze-versions.inc: python 3.12 regex

Python 3 interprets string literals as Unicode strings, and therefore
\s is treated as an escaped Unicode character which is not correct.
Declaring the RegEx pattern as a raw string instead of unicode is
required for Python 3.

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
feature-microblaze-versions.inc#

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>