arm: mvebu: Fix Espressobin build for configs where ENV is not in SPI

When storing the UBoot Environment in for example EXT4,
the U-Boot build is broken for several reasons:
1. armada-385-turris-omnia-u-boot.dtsi will not allow
   CONFIG_ENV_OFFSET and CONFIG_ENV_SIZE to be undefined
2. armada-37xx/board.c ft_board_setup function does not
   exist if CONFIG_ENV_IS_IN_SPI_FLASH is not defined

This commit changes these files so that selecting a
different location for the environment is possible.

Signed-off-by: Rogier Stam <rogier@unrailed.org>
Reviewed-by: Pali Rohár <pali@kernel.org>
diff --git a/arch/arm/dts/armada-385-turris-omnia-u-boot.dtsi b/arch/arm/dts/armada-385-turris-omnia-u-boot.dtsi
index 3ff76c9..008787e 100644
--- a/arch/arm/dts/armada-385-turris-omnia-u-boot.dtsi
+++ b/arch/arm/dts/armada-385-turris-omnia-u-boot.dtsi
@@ -38,6 +38,7 @@
 	};
 };
 
+#ifdef CONFIG_ENV_IS_IN_SPI_FLASH
 &spi0 {
 	u-boot,dm-pre-reloc;
 
@@ -56,6 +57,7 @@
 		};
 	};
 };
+#endif
 
 &uart0 {
 	u-boot,dm-pre-reloc;
diff --git a/board/Marvell/mvebu_armada-37xx/board.c b/board/Marvell/mvebu_armada-37xx/board.c
index 6bfec0c..98e1b36 100644
--- a/board/Marvell/mvebu_armada-37xx/board.c
+++ b/board/Marvell/mvebu_armada-37xx/board.c
@@ -328,9 +328,10 @@
 	return 0;
 }
 
-#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_ENV_IS_IN_SPI_FLASH)
+#ifdef CONFIG_OF_BOARD_SETUP
 int ft_board_setup(void *blob, struct bd_info *bd)
 {
+#ifdef CONFIG_ENV_IS_IN_SPI_FLASH
 	int ret;
 	int spi_off;
 	int parts_off;
@@ -424,6 +425,7 @@
 		return 0;
 	}
 
+#endif
 	return 0;
 }
 #endif