test: inconsistent string tests

Excluding ut str in test/cmd_ut.c but compiling test/str_ut.c results in
failure of the Python test invoking the C unit tests as observed on
sipeed_riscv_smode_defconfig:

FAILED test/py/tests/test_ut.py::test_ut[ut_str_upper]

Allow to compile test/str_ut.c on all boards.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/test/cmd_ut.c b/test/cmd_ut.c
index fad1c89..90674d5 100644
--- a/test/cmd_ut.c
+++ b/test/cmd_ut.c
@@ -89,9 +89,8 @@
 	U_BOOT_CMD_MKENT(bloblist, CONFIG_SYS_MAXARGS, 1, do_ut_bloblist,
 			 "", ""),
 	U_BOOT_CMD_MKENT(bootm, CONFIG_SYS_MAXARGS, 1, do_ut_bootm, "", ""),
-	U_BOOT_CMD_MKENT(str, CONFIG_SYS_MAXARGS, 1, do_ut_str,
-			 "", ""),
 #endif
+	U_BOOT_CMD_MKENT(str, CONFIG_SYS_MAXARGS, 1, do_ut_str, "", ""),
 };
 
 static int do_ut_all(struct cmd_tbl *cmdtp, int flag, int argc,