buildtools: fix all drivers disabled on Windows

[ upstream commit 74299cc ]

buildtools/list-dir-globs.py printed paths with OS directory separator,
which is "/" on Unices and "\" on Windows, while Meson code always
expected "/". This resulted in all drivers being disabled on Windows.

Replace "\" with "/" in script output. Forward slash is a valid,
although non-default, separator on Windows, so no paths can be broken
by this substitution.

Fixes: ab9407c ("build: allow using wildcards to disable drivers")

Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

buildtools/list-dir-globs.py

@@ -16,4 +16,4 @@
 for path in sys.argv[1].split(','):
     for p in iglob(os.path.join(root, path)):
         if os.path.isdir(p):
-            print(os.path.relpath(p))
+            print(os.path.relpath(p).replace('\\', '/'))