board: stm32mp1: remove test on CONFIG_DM_REGULATOR

The tests on CONFIG_DM_REGULATOR, added to avoid compilation issues, can
now be removed, they are no more needed since the commit 16cc5ad0b439
("power: regulator: add dummy helper").

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index 9496890..8c162b4 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -494,7 +494,7 @@
 	ret = uclass_get_device_by_driver(UCLASS_PMIC,
 					  DM_DRIVER_GET(stm32mp_pwr_pmic),
 					  &pwr_dev);
-	if (!ret && IS_ENABLED(CONFIG_DM_REGULATOR)) {
+	if (!ret) {
 		ret = uclass_get_device_by_driver(UCLASS_MISC,
 						  DM_DRIVER_GET(stm32mp_bsec),
 						  &dev);
@@ -555,9 +555,6 @@
 	struct gpio_desc hdmi, audio;
 	int ret = 0;
 
-	if (!IS_ENABLED(CONFIG_DM_REGULATOR))
-		return -ENODEV;
-
 	/* Fix to make I2C1 usable on DK2 for touchscreen usage in kernel */
 	node = ofnode_path("/soc/i2c@40012000/hdmi-transmitter@39");
 	if (!ofnode_valid(node)) {
@@ -658,8 +655,7 @@
 	if (board_is_stm32mp15x_dk2())
 		board_stm32mp15x_dk2_init();
 
-	if (IS_ENABLED(CONFIG_DM_REGULATOR))
-		regulators_enable_boot_on(_DEBUG);
+	regulators_enable_boot_on(_DEBUG);
 
 	/*
 	 * sysconf initialisation done only when U-Boot is running in secure