enf_sf: reuse setup_flash_device instead of open coding it

setup_flash_device selects one of two code paths depending on the driver
model being used (=CONFIG_DM_SPI_FLASH). env_relocate_spec only used
the non driver-model code path. I'm unsure why, either none of the
platforms that need relocation use the driver model, or - worse - the
driver model is not yet usable when relocating.

Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@openedev.com>

common/env_sf.c

@@ -176,12 +176,9 @@ void env_relocate_spec(void)
 		goto out;
 	}
 
-	env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
+	ret = setup_flash_device();
-			CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
+	if (ret)
-	if (!env_flash) {
-		set_default_env("!spi_flash_probe() failed");
 		goto out;
-	}
 
 	ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET,
 				CONFIG_ENV_SIZE, tmp_env1);
@@ -316,10 +313,9 @@ void env_relocate_spec(void)
 	char *buf = NULL;
 
 	buf = (char *)memalign(ARCH_DMA_MINALIGN, CONFIG_ENV_SIZE);
-	env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
+
-			CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
+	ret = setup_flash_device();
-	if (!env_flash) {
+	if (ret) {
-		set_default_env("!spi_flash_probe() failed");
 		if (buf)
 			free(buf);
 		return;