Add CONFIG_GPIOLIB to the all_tests config so that it can run test
cases that create dummy GPIO drivers.

Some tests for the Cirrus Logic cs35l56 ASoC codec driver and
cirrus_scodec HDA driver create a dummy GPIO driver so they can
test driver functions that read from the GPIOs. These tests will be
skipped if CONFIG_GPIOLIB is not set. Ideally we would like them to
be run when selecting --alltests.

CONFIG_GPIOLIB does not have any dependencies and only enables
generic library code.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
---
 tools/testing/kunit/configs/all_tests.config | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/kunit/configs/all_tests.config b/tools/testing/kunit/configs/all_tests.config
index 422e186cf3cf..e21239dc6fae 100644
--- a/tools/testing/kunit/configs/all_tests.config
+++ b/tools/testing/kunit/configs/all_tests.config
@@ -40,6 +40,8 @@ CONFIG_DAMON=y
 CONFIG_DAMON_VADDR=y
 CONFIG_DAMON_PADDR=y
 
+CONFIG_GPIOLIB=y
+
 CONFIG_REGMAP_BUILD=y
 
 CONFIG_AUDIT=y
-- 
2.47.3