lib: Kconfig.debug: default KUNIT_* fragments to KUNIT_ALL_TESTS

This makes it easier to enable all KUnit fragments.

Adding 'if !KUNIT_ALL_TESTS' so individual tests can not be turned off.
Therefore if KUNIT_ALL_TESTS is enabled that will hide the prompt in
menuconfig.
Reviewed-by: NDavid Gow <davidgow@google.com>
Signed-off-by: NAnders Roxell <anders.roxell@linaro.org>
Signed-off-by: NShuah Khan <skhan@linuxfoundation.org>

lib/Kconfig.debug

@@ -2064,8 +2064,9 @@ config TEST_SYSCTL
 	  If unsure, say N.
 
 config SYSCTL_KUNIT_TEST
-	tristate "KUnit test for sysctl"
+	tristate "KUnit test for sysctl" if !KUNIT_ALL_TESTS
 	depends on KUNIT
+	default KUNIT_ALL_TESTS
 	help
 	  This builds the proc sysctl unit test, which runs on boot.
 	  Tests the API contract and implementation correctness of sysctl.
@@ -2075,8 +2076,9 @@ config SYSCTL_KUNIT_TEST
 	  If unsure, say N.
 
 config LIST_KUNIT_TEST
-	tristate "KUnit Test for Kernel Linked-list structures"
+	tristate "KUnit Test for Kernel Linked-list structures" if !KUNIT_ALL_TESTS
 	depends on KUNIT
+	default KUNIT_ALL_TESTS
 	help
 	  This builds the linked list KUnit test suite.
 	  It tests that the API and basic functionality of the list_head type