fsck.f2fs: fix sit types seamlessly
fsck.f2fs: fix sit types seamlessly

SIT types can be wrong when active_logs are 2 or 4.
So, let's fix this implicitly.

Signed-off-by: Jaegeuk Kim <71255387a32c360dfbe6dfb7aaeb123bf1dc8cb6@kernel.org>

temasek/android_external_f2fs-tools,DARKPOP/external_f2fs-tools,VanirAOSP/external_f2fs-tools,AOSPA-L/android_external_f2fs-tools,AOSPA-L/android_external_f2fs-tools,Khaon/android_external_f2fs-tools,Fusion-Rom/android_external_f2fs-tools,DARKPOP/external_f2fs-tools,VanirAOSP/external_f2fs-tools,Euphoria-OS-Legacy/android_external_f2fs-tools,temasek/android_external_f2fs-tools,Euphoria-OS-Legacy/android_external_f2fs-tools,Fusion-Rom/android_external_f2fs-tools,Khaon/android_external_f2fs-tools,Oi-Android/android_external_f2fs-tools,Oi-Android/android_external_f2fs-tools