imx_common: Return MMCSD_MODE_FS in spl_boot_mode() also for EXTFS

spl_boot_mode() returned MMCSD_MODE_RAW on MMC if CONFIG_SPL_EXT_SUPPORT
was configured. EXTFS is the default filesystem selected in imx6_spl.h
and the function should return MMCSD_MODE_FS instead.

Fix this and return MMCSD_MODE_FS instead in such cases.

Signed-off-by: Petr Kulhavy <brain@jikos.cz>
CC: Stefano Babic <sbabic@denx.de>
CC: Tim Harvey <tharvey@gateworks.com>
CC: Fabio Estevam <Fabio.Estevam@freescale.com>

arch/arm/imx-common/spl.c

@@ -76,7 +76,7 @@ u32 spl_boot_mode(const u32 boot_device)
 	/* for MMC return either RAW or FAT mode */
 	case BOOT_DEVICE_MMC1:
 	case BOOT_DEVICE_MMC2:
-#if defined(CONFIG_SPL_FAT_SUPPORT)
+#if defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
 		return MMCSD_MODE_FS;
 #elif defined(CONFIG_SUPPORT_EMMC_BOOT)
 		return MMCSD_MODE_EMMCBOOT;