feature/modules-virtio: Fix symbol filter

After linux kernel commit ffe6176b7f53 ("virtio: store owner from
modules with register_virtio_driver()"), the symbol name changed and no
longer matches the regular expression.

Link: torvalds/linux@ffe6176
Signed-off-by: Alexey Gladkov <[email protected]>

Author: legionus

features/modules-virtio/rules.mk

@@ -1,3 +1,3 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
-VIRTIO_PATTERN_SET = symbol:^register_virtio_driver
+VIRTIO_PATTERN_SET = symbol:^(__)?register_virtio_driver
 MODULES_PATTERN_SETS += VIRTIO_PATTERN_SET