sparc: drop use of extern for prototypes in arch/sparc/*

Drop the remaining uses of extern for prototypes in .h files
in the sparc specific part of the kernel tree.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc arch/sparc/kernel/cpumap.h
Simple merge

diff --cc arch/sparc/kernel/entry.h
Simple merge

diff --cc arch/sparc/kernel/iommu_common.h
Simple merge

diff --cc arch/sparc/kernel/irq.h
Simple merge

diff --cc arch/sparc/kernel/kernel.h
Simple merge

diff --cc arch/sparc/kernel/pci_impl.h
Simple merge

diff --cc arch/sparc/kernel/pci_sun4v.h
Simple merge

diff --cc arch/sparc/kernel/prom.h
Simple merge

diff --cc arch/sparc/kernel/psycho_common.h
Simple merge

diff --cc arch/sparc/mm/init_64.h
Simple merge