test: Make all tests depend on UNIT_TEST

Rather than having this condition defined separately for each suite,
bracket all options with 'if UNIT_TEST'.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/optee/Kconfig b/test/optee/Kconfig
index 2f6834a..63e2cbf 100644
--- a/test/optee/Kconfig
+++ b/test/optee/Kconfig
@@ -1,6 +1,6 @@
 config UT_OPTEE
 	bool "Enable OP-TEE Unit Tests"
-	depends on UNIT_TEST && OF_CONTROL && OPTEE
+	depends on OF_CONTROL && OPTEE
 	default y
 	help
 	  This enables the 'ut optee' command which runs a series of unit