test: Add tests for misc uclass

Add a set of tests for the misc uclass.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 4ce9d21..f66c9e8 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -39,7 +39,7 @@
 obj-$(CONFIG_SANDBOX) += spltest_sandbox.o
 endif
 endif
-obj-$(CONFIG_SANDBOX) += syscon_sandbox.o
+obj-$(CONFIG_SANDBOX) += syscon_sandbox.o misc_sandbox.o
 obj-$(CONFIG_TEGRA_CAR) += tegra_car.o
 obj-$(CONFIG_TEGRA186_BPMP) += tegra186_bpmp.o
 obj-$(CONFIG_TWL4030_LED) += twl4030_led.o