linux-next: build warning after merge of the powerpc tree

Hi all,

After merging the powerpc tree, today's linux-next build (powerpc
allyesconfig) produced this warning:

WARNING: arch/powerpc/sysdev/built-in.o(.text+0x10eb8): Section mismatch in reference from the function .ics_rtas_init() to the function .init.text:.xics_register_ics()
The function .ics_rtas_init() references
the function __init .xics_register_ics().
This is often because .ics_rtas_init lacks a __init 
annotation or the annotation of .xics_register_ics is wrong.

Introduced by commit 0b05ac6e2480 ("powerpc/xics: Rewrite XICS driver").

ics_rtas_init() is only called from xics_init() which is marked __init,
so ics_rtas_init() should be as well.

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/