mvebu: enable ext4, f2fs and loop device support

Signed-off-by: Felix Fietkau <nbd@nbd.name>

target/linux/mvebu/config-4.4

@@ -55,6 +55,7 @@ CONFIG_ASYNC_TX_ENABLE_CHANNEL_SWITCH=y
 CONFIG_ATA=y
 CONFIG_ATAGS=y
 CONFIG_AUTO_ZRELADDR=y
+CONFIG_BLK_DEV_LOOP=y
 CONFIG_BOUNCE=y
 # CONFIG_CACHE_FEROCEON_L2 is not set
 CONFIG_CACHE_L2X0=y
@@ -103,6 +104,7 @@ CONFIG_CRYPTO_AEAD2=y
 CONFIG_CRYPTO_AES_ARM=y
 CONFIG_CRYPTO_AES_ARM_BS=y
 # CONFIG_CRYPTO_AES_ARM_CE is not set
+CONFIG_CRYPTO_CRC32C=y
 CONFIG_CRYPTO_CRYPTD=y
 CONFIG_CRYPTO_DEFLATE=y
 CONFIG_CRYPTO_DES=y
@@ -149,8 +151,15 @@ CONFIG_DTC=y
 CONFIG_EARLY_PRINTK=y
 CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
+CONFIG_EXT4_FS=y
+# CONFIG_F2FS_CHECK_FS is not set
+CONFIG_F2FS_FS=y
+# CONFIG_F2FS_FS_SECURITY is not set
+CONFIG_F2FS_FS_XATTR=y
+CONFIG_F2FS_STAT_FS=y
 CONFIG_FIXED_PHY=y
 CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_FS_MBCACHE=y
 CONFIG_GENERIC_ALLOCATOR=y
 CONFIG_GENERIC_BUG=y
 CONFIG_GENERIC_CLOCKEVENTS=y
@@ -241,6 +250,7 @@ CONFIG_IRQ_DOMAIN_HIERARCHY=y
 CONFIG_IRQ_FORCED_THREADING=y
 CONFIG_IRQ_WORK=y
 # CONFIG_IWMMXT is not set
+CONFIG_JBD2=y
 CONFIG_LEDS_GPIO=y
 CONFIG_LEDS_PCA963X=y
 CONFIG_LEDS_TLC591XX=y

target/linux/mvebu/image/Makefile

@@ -182,7 +182,7 @@ define Device/armada-388-clearfog
   KERNEL_INSTALL := 1
   KERNEL := dtb | kernel-bin
   DEVICE_TITLE := SolidRun ClearFog
-  DEVICE_PACKAGES := uboot-mvebu-clearfog kmod-fs-ext4
+  DEVICE_PACKAGES := uboot-mvebu-clearfog
   IMAGES := bundle.tar.gz sdcard.img.gz
   IMAGE/bundle.tar.gz := clearfog-bundle
   IMAGE/sdcard.img.gz := boot-scr | boot-img | sdcard-img | gzip