dm: test: Add a test driver for devres

Add a driver which does devres allocations so that we can write tests for
devres.

Signed-off-by: Simon Glass <sjg@chromium.org>

include/dm/uclass-id.h

@@ -19,6 +19,7 @@ enum uclass_id {
 	UCLASS_TEST_BUS,
 	UCLASS_TEST_PROBE,
 	UCLASS_TEST_DUMMY,
+	UCLASS_TEST_DEVRES,
 	UCLASS_SPI_EMUL,	/* sandbox SPI device emulator */
 	UCLASS_I2C_EMUL,	/* sandbox I2C device emulator */
 	UCLASS_I2C_EMUL_PARENT,	/* parent for I2C device emulators */

include/test/test.h

@@ -46,5 +46,14 @@ struct unit_test {
 		.func = _name,						\
 	}
 
+/* Sizes for devres tests */
+enum {
+	TEST_DEVRES_SIZE	= 100,
+	TEST_DEVRES_COUNT	= 10,
+	TEST_DEVRES_TOTAL	= TEST_DEVRES_SIZE * TEST_DEVRES_COUNT,
+
+	/* A different size */
+	TEST_DEVRES_SIZE2	= 15,
+};
 
 #endif /* __TEST_TEST_H */