Revert "test: Update time tests to use unit-test asserts"

While at the base level, this conversion looks equivalent, we now see
both of these tests failing (due to exceeding their allowed margin for
being too slow) in Azure with a very high frequency.

This reverts commit 88db4fc5fec20429881896740df61d402b4b1f66.

Signed-off-by: Tom Rini <trini@konsulko.com>
Tested-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/test/lib/time.c b/test/lib/time.c
index b99e738..2095bef 100644
--- a/test/lib/time.c
+++ b/test/lib/time.c
@@ -22,7 +22,11 @@
 			next = get_timer(0);
 		} while (start == next);
 
-		ut_asserteq(start + 1, next);
+		if (start + 1 != next) {
+			printf("%s: iter=%d, start=%lu, next=%lu, expected a difference of 1\n",
+			       __func__, iter, start, next);
+			return -EINVAL;
+		}
 		start++;
 	}
 
@@ -31,7 +35,11 @@
 	 * an extra millisecond may have passed.
 	 */
 	diff = get_timer(base);
-	ut_assert(diff == iter || diff == iter + 1);
+	if (diff != iter && diff != iter + 1) {
+		printf("%s: expected get_timer(base) to match elapsed time: diff=%lu, expected=%d\n",
+		       __func__, diff, iter);
+			return -EINVAL;
+	}
 
 	return 0;
 }
@@ -49,8 +57,11 @@
 		next = timer_get_us();
 		if (next != prev) {
 			delta = next - prev;
-			ut_assert(delta >= 0);
-			if (delta) {
+			if (delta < 0) {
+				printf("%s: timer_get_us() went backwards from %lu to %lu\n",
+				       __func__, prev, next);
+				return -EINVAL;
+			} else if (delta != 0) {
 				if (delta < min)
 					min = delta;
 				prev = next;
@@ -59,7 +70,11 @@
 		}
 	}
 
-	ut_asserteq(1, min);
+	if (min != 1) {
+		printf("%s: Minimum microsecond delta should be 1 but is %lu\n",
+		       __func__, min);
+		return -EINVAL;
+	}
 
 	return 0;
 }
@@ -80,7 +95,8 @@
 	error = delta_us - 1000000;
 	printf("%s: Microsecond time for 1 second: %lu, error = %ld\n",
 	       __func__, delta_us, error);
-	ut_assert(abs(error) <= 1000);
+	if (abs(error) > 1000)
+		return -EINVAL;
 
 	return 0;
 }
@@ -99,7 +115,8 @@
 	error = delta - 1000;
 	printf("%s: Delay time for 1000 udelay(1000): %lu ms, error = %ld\n",
 	       __func__, delta, error);
-	ut_assert(abs(error) <= 100);
+	if (abs(error) > 100)
+		return -EINVAL;
 
 	return 0;
 }