kirkwood: move ext4 support to modules

Ext4 support is built in kirkwood kernel.

This patch moves ext4 support to modules and enables it for devices
with SATA interface.

Reviewed-by: Sungbo Eo <mans0n@gorani.run>
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
[rebase]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

target/linux/kirkwood/config-5.4

@@ -120,7 +120,6 @@ CONFIG_DTC=y
 # CONFIG_EARLY_PRINTK is not set
 CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
-CONFIG_EXT4_FS=y
 CONFIG_FIXED_PHY=y
 CONFIG_FIX_EARLYCON_MEM=y
 CONFIG_FORCE_PCI=y
@@ -204,7 +203,6 @@ CONFIG_IRQCHIP=y
 CONFIG_IRQ_DOMAIN=y
 CONFIG_IRQ_FORCED_THREADING=y
 CONFIG_IRQ_WORK=y
-CONFIG_JBD2=y
 CONFIG_KIRKWOOD_CLK=y
 CONFIG_KIRKWOOD_THERMAL=y
 CONFIG_LEDS_GPIO=y

target/linux/kirkwood/image/Makefile

@@ -51,7 +51,7 @@ define Device/cloudengines_pogoplugv4
   DEVICE_VENDOR := Cloud Engines
   DEVICE_MODEL := Pogoplug V4
   DEVICE_DTS := kirkwood-pogoplug-series-4
-  DEVICE_PACKAGES := kmod-ata-marvell-sata kmod-mvsdio kmod-usb3
+  DEVICE_PACKAGES := kmod-ata-marvell-sata kmod-fs-ext4 kmod-mvsdio kmod-usb3
 endef
 TARGET_DEVICES += cloudengines_pogoplugv4
 
@@ -66,8 +66,8 @@ define Device/iom_ix2-200
   DEVICE_VENDOR := Iomega
   DEVICE_MODEL := StorCenter ix2-200
   DEVICE_DTS := kirkwood-iomega_ix2_200
-  DEVICE_PACKAGES := kmod-ata-marvell-sata kmod-gpio-button-hotplug \
+  DEVICE_PACKAGES := kmod-ata-marvell-sata kmod-fs-ext4 \
-	kmod-hwmon-lm63
+	kmod-gpio-button-hotplug kmod-hwmon-lm63
   PAGESIZE := 512
   SUBPAGESIZE := 256
   BLOCKSIZE := 16k
@@ -112,7 +112,7 @@ define Device/raidsonic_ib-nas62x0
   DEVICE_VENDOR := RaidSonic
   DEVICE_MODEL := ICY BOX IB-NAS62x0
   BOARD_NAME := ib62x0
-  DEVICE_PACKAGES := kmod-ata-marvell-sata
+  DEVICE_PACKAGES := kmod-ata-marvell-sata kmod-fs-ext4
 endef
 TARGET_DEVICES += raidsonic_ib-nas62x0
 
@@ -127,7 +127,7 @@ define Device/seagate_goflexnet
   DEVICE_VENDOR := Seagate
   DEVICE_MODEL := GoFlexNet
   BOARD_NAME := goflexnet
-  DEVICE_PACKAGES := kmod-ata-marvell-sata
+  DEVICE_PACKAGES := kmod-ata-marvell-sata kmod-fs-ext4
 endef
 TARGET_DEVICES += seagate_goflexnet
 
@@ -135,14 +135,14 @@ define Device/seagate_goflexhome
   DEVICE_VENDOR := Seagate
   DEVICE_MODEL := GoFlexHome
   BOARD_NAME := goflexhome
-  DEVICE_PACKAGES := kmod-ata-marvell-sata
+  DEVICE_PACKAGES := kmod-ata-marvell-sata kmod-fs-ext4
 endef
 TARGET_DEVICES += seagate_goflexhome
 
 define Device/zyxel_nsa310b
   DEVICE_VENDOR := ZyXEL
   DEVICE_MODEL := NSA310b
-  DEVICE_PACKAGES := kmod-ata-marvell-sata kmod-r8169 \
+  DEVICE_PACKAGES := kmod-ata-marvell-sata kmod-r8169 kmod-fs-ext4 \
 	kmod-gpio-button-hotplug kmod-hwmon-lm85
   BOARD_NAME := nsa310b
 endef
@@ -152,8 +152,8 @@ define Device/zyxel_nsa325
   DEVICE_VENDOR := ZyXEL
   DEVICE_MODEL := NSA325
   DEVICE_VARIANT := v1/v2
-  DEVICE_PACKAGES := kmod-ata-marvell-sata kmod-gpio-button-hotplug \
+  DEVICE_PACKAGES := kmod-ata-marvell-sata kmod-fs-ext4 \
-	kmod-rtc-pcf8563 kmod-usb3
+	kmod-gpio-button-hotplug kmod-rtc-pcf8563 kmod-usb3
   BOARD_NAME := nsa325
 endef
 TARGET_DEVICES += zyxel_nsa325