spl: dm: use CONFIG_IS_ENABLED to test for the DM option

Even though there's now a TPL_DM configuration option, the spl logic
still checks for SPL_DM and thus does not pick up the proper config
option.

This introduces the use of CONFIG_IS_ENABLED(DM) in spl.c to always
pick up the desired configuration option instead of having a
hard-coded check for the SPL variant.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/common/spl/spl.c b/common/spl/spl.c
index bdb681f..d245cfc 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -6,6 +6,7 @@
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
+
 #include <common.h>
 #include <dm.h>
 #include <spl.h>
@@ -243,7 +244,7 @@
 			return ret;
 		}
 	}
-	if (IS_ENABLED(CONFIG_SPL_DM)) {
+	if (CONFIG_IS_ENABLED(DM)) {
 		bootstage_start(BOOTSTATE_ID_ACCUM_DM_SPL, "dm_spl");
 		/* With CONFIG_SPL_OF_PLATDATA, bring in all devices */
 		ret = dm_init_and_scan(!CONFIG_IS_ENABLED(OF_PLATDATA));
@@ -424,7 +425,7 @@
 	      gd->malloc_ptr / 1024);
 #endif
 
-	if (IS_ENABLED(CONFIG_SPL_ATF_SUPPORT)) {
+	if (CONFIG_IS_ENABLED(ATF_SUPPORT)) {
 		debug("loaded - jumping to U-Boot via ATF BL31.\n");
 		bl31_entry();
 	}