test: Rename unit-test flags

The UT_TESTF_ macros read as 'unit test test flags' which is not right.
Rename to UTF ('unit test flags').

This has the benefit of being shorter, which helps keep UNIT_TEST()
declarations on a single line.

Give the enum a name and reference it from the UNIT_TEST() macros while
we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/adc.c b/test/dm/adc.c
index a26a677..e27302b 100644
--- a/test/dm/adc.c
+++ b/test/dm/adc.c
@@ -32,7 +32,7 @@
 
 	return 0;
 }
-DM_TEST(dm_test_adc_bind, UT_TESTF_SCAN_FDT);
+DM_TEST(dm_test_adc_bind, UTF_SCAN_FDT);
 
 static int dm_test_adc_wrong_channel_selection(struct unit_test_state *uts)
 {
@@ -43,7 +43,7 @@
 
 	return 0;
 }
-DM_TEST(dm_test_adc_wrong_channel_selection, UT_TESTF_SCAN_FDT);
+DM_TEST(dm_test_adc_wrong_channel_selection, UTF_SCAN_FDT);
 
 static int dm_test_adc_supply(struct unit_test_state *uts)
 {
@@ -79,7 +79,7 @@
 
 	return 0;
 }
-DM_TEST(dm_test_adc_supply, UT_TESTF_SCAN_FDT);
+DM_TEST(dm_test_adc_supply, UTF_SCAN_FDT);
 
 struct adc_channel adc_channel_test_data[] = {
 	{ 0, SANDBOX_ADC_CHANNEL0_DATA },
@@ -104,7 +104,7 @@
 
 	return 0;
 }
-DM_TEST(dm_test_adc_single_channel_conversion, UT_TESTF_SCAN_FDT);
+DM_TEST(dm_test_adc_single_channel_conversion, UTF_SCAN_FDT);
 
 static int dm_test_adc_multi_channel_conversion(struct unit_test_state *uts)
 {
@@ -127,7 +127,7 @@
 
 	return 0;
 }
-DM_TEST(dm_test_adc_multi_channel_conversion, UT_TESTF_SCAN_FDT);
+DM_TEST(dm_test_adc_multi_channel_conversion, UTF_SCAN_FDT);
 
 static int dm_test_adc_single_channel_shot(struct unit_test_state *uts)
 {
@@ -143,7 +143,7 @@
 
 	return 0;
 }
-DM_TEST(dm_test_adc_single_channel_shot, UT_TESTF_SCAN_FDT);
+DM_TEST(dm_test_adc_single_channel_shot, UTF_SCAN_FDT);
 
 static int dm_test_adc_multi_channel_shot(struct unit_test_state *uts)
 {
@@ -163,7 +163,7 @@
 
 	return 0;
 }
-DM_TEST(dm_test_adc_multi_channel_shot, UT_TESTF_SCAN_FDT);
+DM_TEST(dm_test_adc_multi_channel_shot, UTF_SCAN_FDT);
 
 static const int dm_test_adc_uV_data[SANDBOX_ADC_CHANNELS] = {
 	((u64)SANDBOX_ADC_CHANNEL0_DATA * SANDBOX_BUCK2_INITIAL_EXPECTED_UV) /
@@ -194,4 +194,4 @@
 
 	return 0;
 }
-DM_TEST(dm_test_adc_raw_to_uV, UT_TESTF_SCAN_FDT);
+DM_TEST(dm_test_adc_raw_to_uV, UTF_SCAN_FDT);