platform/chrome: kunit: make EC protocol tests independent

Remove CONFIG_CROS_KUNIT and common code concept for ChromeOS Kunit but
make it bundle to ChromeOS EC protocol tests.

Reviewed-by: Guenter Roeck <groeck@chromium.org>
Link: https://lore.kernel.org/r/20231003080515.4011374-1-tzungbi@kernel.org
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>

drivers/platform/chrome/Kconfig

@@ -299,12 +299,12 @@ config CROS_TYPEC_SWITCH
 source "drivers/platform/chrome/wilco_ec/Kconfig"
 
 # Kunit test cases
-config CROS_KUNIT
-	tristate "Kunit tests for ChromeOS" if !KUNIT_ALL_TESTS
+config CROS_KUNIT_EC_PROTO_TEST
+	tristate "Kunit tests for ChromeOS EC protocol" if !KUNIT_ALL_TESTS
 	depends on KUNIT && CROS_EC
 	default KUNIT_ALL_TESTS
 	select CROS_EC_PROTO
 	help
-	  ChromeOS Kunit tests.
+	  Kunit tests for ChromeOS EC protocol.
 
 endif # CHROMEOS_PLATFORMS

drivers/platform/chrome/Makefile

@@ -36,6 +36,5 @@ obj-$(CONFIG_CROS_USBPD_NOTIFY)		+= cros_usbpd_notify.o
 obj-$(CONFIG_WILCO_EC)			+= wilco_ec/
 
 # Kunit test cases
-obj-$(CONFIG_CROS_KUNIT)		+= cros_kunit.o
-cros_kunit-objs				:= cros_kunit_util.o
-cros_kunit-objs				+= cros_ec_proto_test.o
+obj-$(CONFIG_CROS_KUNIT_EC_PROTO_TEST)	+= cros_kunit_proto_test.o
+cros_kunit_proto_test-objs		:= cros_ec_proto_test_util.o cros_ec_proto_test.o

drivers/platform/chrome/cros_ec_proto_test.c

@@ -11,7 +11,7 @@
 #include <linux/platform_data/cros_ec_proto.h>
 
 #include "cros_ec.h"
-#include "cros_kunit_util.h"
+#include "cros_ec_proto_test_util.h"
 
 #define BUFSIZE 512
 

drivers/platform/chrome/cros_ec_proto_test_util.c

@@ -11,7 +11,7 @@
 #include <linux/platform_data/cros_ec_proto.h>
 
 #include "cros_ec.h"
-#include "cros_kunit_util.h"
+#include "cros_ec_proto_test_util.h"
 
 int cros_kunit_ec_xfer_mock_default_result;
 int cros_kunit_ec_xfer_mock_default_ret;
@@ -126,5 +126,3 @@ void cros_kunit_mock_reset(void)
 	cros_kunit_readmem_mock_data = NULL;
 	cros_kunit_readmem_mock_ret = 0;
 }
-
-MODULE_LICENSE("GPL");