lantiq: kernel 5.4: debloat kernel config

The etop driver is used by all targets except xrx200.

Remove the UBIFS compression support for zlib and zstd from the xway
subtarget. The hardware is EOL for a long time and it's unlikely to ever
see a board shipped with an UBIFS using these compression methods.

Remove the JFFS2 support. Support for jjfs2 images was dropped years
ago.

It shrinks the compressed kernel up to 130 KByte.

Signed-off-by: Mathias Kresin <dev@kresin.me>

target/linux/lantiq/ase/config-5.4

@@ -11,6 +11,7 @@ CONFIG_GENERIC_ALLOCATOR=y
 CONFIG_GPIO_GENERIC=y
 CONFIG_GPIO_GENERIC_PLATFORM=y
 # CONFIG_ISDN is not set
+CONFIG_LANTIQ_ETOP=y
 CONFIG_LEDS_TRIGGER_HEARTBEAT=y
 CONFIG_NLS=y
 # CONFIG_PSB6970_PHY is not set

target/linux/lantiq/config-5.4

@@ -129,9 +129,10 @@ CONFIG_IRQ_DOMAIN_HIERARCHY=y
 CONFIG_IRQ_FORCED_THREADING=y
 CONFIG_IRQ_MIPS_CPU=y
 CONFIG_IRQ_WORK=y
+# CONFIG_JFFS2_FS is not set
 CONFIG_LANTIQ=y
 CONFIG_LANTIQ_DT_NONE=y
-CONFIG_LANTIQ_ETOP=y
+# CONFIG_LANTIQ_ETOP is not set
 CONFIG_LANTIQ_WDT=y
 # CONFIG_LANTIQ_XRX200 is not set
 # CONFIG_LANTIQ_XRX200_LEGACY is not set

target/linux/lantiq/falcon/config-5.4

@@ -1,3 +1,4 @@
+CONFIG_LANTIQ_ETOP=y
 CONFIG_MTD_NAND_CORE=y
 CONFIG_MTD_NAND_ECC_SW_HAMMING=y
 CONFIG_MTD_RAW_NAND=y

target/linux/lantiq/xway/config-5.4

@@ -4,16 +4,14 @@ CONFIG_AT803X_PHY=y
 CONFIG_BLK_MQ_PCI=y
 CONFIG_CRC16=y
 CONFIG_CRYPTO_ACOMP2=y
-CONFIG_CRYPTO_DEFLATE=y
 CONFIG_CRYPTO_HASH_INFO=y
 CONFIG_CRYPTO_LZO=y
-CONFIG_CRYPTO_ZSTD=y
 CONFIG_GENERIC_ALLOCATOR=y
 CONFIG_INPUT=y
 CONFIG_INPUT_EVDEV=y
 CONFIG_INPUT_POLLDEV=y
 # CONFIG_ISDN is not set
-CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+CONFIG_LANTIQ_ETOP=y
 CONFIG_LZO_COMPRESS=y
 CONFIG_LZO_DECOMPRESS=y
 CONFIG_MTD_NAND_CORE=y
@@ -41,14 +39,9 @@ CONFIG_SGL_ALLOC=y
 CONFIG_UBIFS_FS=y
 CONFIG_UBIFS_FS_ADVANCED_COMPR=y
 CONFIG_UBIFS_FS_LZO=y
-CONFIG_UBIFS_FS_ZLIB=y
-CONFIG_UBIFS_FS_ZSTD=y
+# CONFIG_UBIFS_FS_ZLIB is not set
+# CONFIG_UBIFS_FS_ZSTD is not set
 CONFIG_USB=y
 CONFIG_USB_COMMON=y
 # CONFIG_USB_EHCI_HCD is not set
 CONFIG_USB_SUPPORT=y
-CONFIG_XXHASH=y
-CONFIG_ZLIB_DEFLATE=y
-CONFIG_ZLIB_INFLATE=y
-CONFIG_ZSTD_COMPRESS=y
-CONFIG_ZSTD_DECOMPRESS=y

target/linux/lantiq/xway_legacy/config-5.4

@@ -12,6 +12,7 @@ CONFIG_INPUT=y
 CONFIG_INPUT_EVDEV=y
 CONFIG_INPUT_POLLDEV=y
 # CONFIG_ISDN is not set
+CONFIG_LANTIQ_ETOP=y
 CONFIG_LEDS_TRIGGER_HEARTBEAT=y
 # CONFIG_LEDS_TRIGGER_TIMER is not set
 CONFIG_LZO_COMPRESS=y