rockchip: board: puma_rk3399: make env location selectable via Kconfig

The environment storage location is selectable via Kconfig. We support
eMMC, SD and SPI-NOR as location for U-Boot. This adds support to store
the environment in the SPI-NOR additional to the default eMMC location.

Signed-off-by: Klaus Goger <klaus.goger@theobroma-systems.com>
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

include/configs/puma_rk3399.h

@@ -17,7 +17,15 @@
 #undef CONFIG_ENV_OFFSET
 #define CONFIG_ENV_OFFSET (240 * 1024)
 
+#if defined(CONFIG_ENV_IS_IN_MMC)
 #define CONFIG_SYS_MMC_ENV_DEV 1
+#elif defined(CONFIG_ENV_IS_IN_SPI_FLASH)
+#define CONFIG_ENV_SECT_SIZE		(8 * 1024)
+#define CONFIG_ENV_SPI_BUS		CONFIG_SF_DEFAULT_BUS
+#define CONFIG_ENV_SPI_CS		CONFIG_SF_DEFAULT_CS
+#define CONFIG_ENV_SPI_MODE		CONFIG_SF_DEFAULT_MODE
+#define CONFIG_ENV_SPI_MAX_HZ	CONFIG_SF_DEFAULT_SPEED
+#endif
 
 #define SDRAM_BANK_SIZE			(2UL << 30)