p880: p880.mk cleanup and adjustements

[*] Overall cleanup
[*] Force-build e2fsck module in order to fix this log error:
    E/logwrapper(  138): executing /system/bin/e2fsck failed: No such file or directory
[*] Force-build libemoji module in order to fix this log error:
    E/EmojiFactory_jni(  159): Failed to load libemoji.so: dlopen failed: library "libemoji.so" not found