HID: uclogic: Avoid linking common code into multiple modules

The hid-uclogic-params.o and hid-uclogic-rdesc.o files are linked
into both the driver module and the unit test, which triggers a
W=1 warning:

scripts/Makefile.build:236: drivers/hid/Makefile: hid-uclogic-rdesc.o is added to multiple modules: hid-uclogic hid-uclogic-test
scripts/Makefile.build:236: drivers/hid/Makefile: hid-uclogic-params.o is added to multiple modules: hid-uclogic hid-uclogic-test

Avoids this by moving these two files into a separate module
that is used by the driver and the unit test.

Reported-by: Arnd Bergmann <[e-mail]>
Acked-by: Arnd Bergmann <[e-mail]>
Signed-off-by: José Expósito <[e-mail]>
Signed-off-by: Jiri Kosina <[e-mail]>

drivers/hid/Makefile

···
 obj-$(CONFIG_HID_SENSOR_HUB)	+= hid-sensor-hub.o
 obj-$(CONFIG_HID_SENSOR_CUSTOM_SENSOR)	+= hid-sensor-custom.o
 
-hid-uclogic-test-objs		:= hid-uclogic-rdesc.o \
-				   hid-uclogic-params.o \
-				   hid-uclogic-rdesc-test.o
-obj-$(CONFIG_HID_KUNIT_TEST)	+= hid-uclogic-test.o
+hid-uclogic-test-objs		:= hid-uclogic-rdesc-test.o
+obj-$(CONFIG_HID_KUNIT_TEST)	+= hid-uclogic.o hid-uclogic-test.o
 
 obj-$(CONFIG_USB_HID)		+= usbhid/
 obj-$(CONFIG_USB_MOUSE)		+= usbhid/

drivers/hid/hid-uclogic-rdesc-test.c

···
 #include <kunit/test.h>
 #include "./hid-uclogic-rdesc.h"
 
+MODULE_IMPORT_NS(EXPORTED_FOR_KUNIT_TESTING);
+
 struct uclogic_template_case {
 	const char *name;
 	const __u8 *template;

drivers/hid/hid-uclogic-rdesc.c

···
 #include "hid-uclogic-rdesc.h"
 #include <linux/slab.h>
 #include <asm/unaligned.h>
+#include <kunit/visibility.h>
 
 /* Fixed WP4030U report descriptor */
 __u8 uclogic_rdesc_wp4030u_fixed_arr[] = {
···
 
 	return rdesc_ptr;
 }
+EXPORT_SYMBOL_IF_KUNIT(uclogic_rdesc_template_apply);