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: vmlinux.o(.text+0xa7cb8): Section mismatch in reference from the function .xive_spapr_init() to the function .init.text:.xive_core_init()
The function .xive_spapr_init() references
the function __init .xive_core_init().
This is often because .xive_spapr_init lacks a __init 
annotation or the annotation of .xive_core_init is wrong.

Introduced by commit

  eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller")

-- 
Cheers,
Stephen Rothwell