[PATCH][UBI] remove __exit on functions referenced in '.text' or '.init.text'

[bene at linutronix.de]

Hi Artem,

> Yeah, I was actually planning to do the same and get rid of most
> __init/__exit. But still out of curiosity, may you please elaborate on
> the problem?

The Problem is simple: the kernel does not link. The linker reports the
cross section references as errors. Here is an example:

`ubi_sysfs_vol_close' referenced in section `.text' of drivers/built-in.o:
defined in discarded section `.exit.text' of
drivers/built-in.o`ubi_sysfs_vol_close' referenced in section `.text' of
drivers/built-in.o: defined in discarded section `.exit.text' of
drivers/built-in.o`ubi_sysfs_vol_close' referenced in section `.text' of
drivers/built-in.o: defined in discarded section `.exit.text' of
drivers/built-in.o`ubi_sysfs_close' referenced in section `.text' of
drivers/built-in.o: defined in discarded section `.exit.text' of
drivers/built-in.o`ubi_sysfs_close' referenced in section `.init.text' of
drivers/built-in.o: defined in discarded section `.exit.text' of
drivers/built-in.o

Bene