all: enable the CONFIG_F2FS_FS_COMPRESSION option

[josacar]

This allows to use compression on a F2FS partition to save space and
reduce I/O operations to media.

Description

This allows to use compress options when mounting a F2FS filesystem created before with compress option:

mkfs.f2fs -l mylabel -O extra_attr,inode_checksum,sb_checksum,compression /dev/sdxY

The image builder does not support creating a f2fs filesystem with compress option yet, I've the changes pending in another commit.

How Has This Been Tested?

I've compiled this option when building a custom image:

root@rock-3a:~# cat /etc/armbian-release
# PLEASE DO NOT EDIT THIS FILE
BOARD=rock-3a
BOARD_NAME="Rock 3A"
BOARDFAMILY=rk35xx
BUILD_REPOSITORY_URL=https://github.com/armbian/build
BUILD_REPOSITORY_COMMIT=92a1c729d-dirty
VERSION=22.02.1
LINUXFAMILY=rockchip64
ARCH=arm64
IMAGE_TYPE=stable
BOARD_TYPE=wip
INITRD_ARCH=arm64
KERNEL_IMAGE_TYPE=Image
BRANCH=edge

root@rock-3a:~# mount | grep f2fs
/dev/mmcblk0p2 on / type f2fs (rw,noatime,lazytime,background_gc=on,discard,no_heap,user_xattr,inline_xattr,acl,inline_data,inline_dentry,flush_merge,extent_cache,mode=adaptive,active_logs=6,alloc_mode=default,checkpoint_merge,fsync_mode=posix,compress_algorithm=zstd,compress_log_size=2,compress_mode=fs,discard_unit=block)

root@rock-3a:~# grep CONFIG_F2FS_FS_COMPRESSION /boot/config-5.17.3-rk35xx
CONFIG_F2FS_FS_COMPRESSION=y

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

[lanefu]

Since this isn't a device specific setting would prefer that this is enabled on all kernel configs where compatible

[josacar]

@lanefu sounds great, I'll add new commits then. Thanks!

[josacar]

@lanefu I've updated the architectures that have CONFIG_F2FS_FS set already.