Correct SPL uses of ENV_IS_IN_UBI

This converts 2 usages of this option to the non-SPL form, since there is
no SPL_ENV_IS_IN_UBI defined in Kconfig

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/engicam/stm32mp1/stm32mp1.c b/board/engicam/stm32mp1/stm32mp1.c
index 0a3e580..5223e9b 100644
--- a/board/engicam/stm32mp1/stm32mp1.c
+++ b/board/engicam/stm32mp1/stm32mp1.c
@@ -68,7 +68,7 @@
 
 	case BOOT_FLASH_NAND:
 	case BOOT_FLASH_SPINAND:
-		if (CONFIG_IS_ENABLED(ENV_IS_IN_UBI))
+		if (IS_ENABLED(CONFIG_ENV_IS_IN_UBI))
 			return ENVL_UBI;
 		else
 			return ENVL_NOWHERE;
diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index ec6f0b4..1318ba8 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -831,7 +831,7 @@
 
 	case BOOT_FLASH_NAND:
 	case BOOT_FLASH_SPINAND:
-		if (CONFIG_IS_ENABLED(ENV_IS_IN_UBI))
+		if (IS_ENABLED(CONFIG_ENV_IS_IN_UBI))
 			return ENVL_UBI;
 		else
 			return ENVL_NOWHERE;