test: Generalize the unit test framework

Separate the ability to define tests and assert status of test functions
from the dm tests so they can be used more consistently throughout all
tests.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/sf.c b/test/dm/sf.c
index 08098a1..b084462 100644
--- a/test/dm/sf.c
+++ b/test/dm/sf.c
@@ -10,12 +10,12 @@
 #include <spi.h>
 #include <spi_flash.h>
 #include <asm/state.h>
-#include <dm/ut.h>
 #include <dm/test.h>
 #include <dm/util.h>
+#include <test/ut.h>
 
 /* Test that sandbox SPI flash works correctly */
-static int dm_test_spi_flash(struct dm_test_state *dms)
+static int dm_test_spi_flash(struct unit_test_state *uts)
 {
 	/*
 	 * Create an empty test file and run the SPI flash tests. This is a