dm: Rename DM test flags to make them more generic

The test flags used by driver model are currently not available to other
tests. Rather than creating two sets of flags, make these flags generic
by changing the DM_ prefix to UT_ and moving them to the test.h header.

This will allow adding other test flags without confusion.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/pmic.c b/test/dm/pmic.c
index 8c2766a..ce67120 100644
--- a/test/dm/pmic.c
+++ b/test/dm/pmic.c
@@ -44,7 +44,7 @@
 
 	return 0;
 }
-DM_TEST(dm_test_power_pmic_get, DM_TESTF_SCAN_FDT);
+DM_TEST(dm_test_power_pmic_get, UT_TESTF_SCAN_FDT);
 
 /* PMIC get method - MC34708 - for 3 bytes transmission */
 static int dm_test_power_pmic_mc34708_get(struct unit_test_state *uts)
@@ -54,7 +54,7 @@
 	return 0;
 }
 
-DM_TEST(dm_test_power_pmic_mc34708_get, DM_TESTF_SCAN_FDT);
+DM_TEST(dm_test_power_pmic_mc34708_get, UT_TESTF_SCAN_FDT);
 
 /* Test PMIC I/O */
 static int dm_test_power_pmic_io(struct unit_test_state *uts)
@@ -83,7 +83,7 @@
 
 	return 0;
 }
-DM_TEST(dm_test_power_pmic_io, DM_TESTF_SCAN_FDT);
+DM_TEST(dm_test_power_pmic_io, UT_TESTF_SCAN_FDT);
 
 #define MC34708_PMIC_REG_COUNT 64
 #define MC34708_PMIC_TEST_VAL 0x125534
@@ -101,7 +101,7 @@
 	return 0;
 }
 
-DM_TEST(dm_test_power_pmic_mc34708_regs_check, DM_TESTF_SCAN_FDT);
+DM_TEST(dm_test_power_pmic_mc34708_regs_check, UT_TESTF_SCAN_FDT);
 
 static int dm_test_power_pmic_mc34708_rw_val(struct unit_test_state *uts)
 {
@@ -128,4 +128,4 @@
 	return 0;
 }
 
-DM_TEST(dm_test_power_pmic_mc34708_rw_val, DM_TESTF_SCAN_FDT);
+DM_TEST(dm_test_power_pmic_mc34708_rw_val, UT_TESTF_SCAN_FDT);