Fix warnings and errors in arch/arm/mm for nommu build.
Remove commented out function prototype in pgtable-nommu.h
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Add an empty setup_mm_for_reboot() function for nommu machines.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Move the MMU specific code from init.c into mmu.c, and add nommu
fixups to nommu.c
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

This is a trivial patch to export flush_dcache_page in mm/nommu.c.
Signed-off-by: NHyok S. Choi <hyok.choi@samsung.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

nommu doesn't require a complex flush_dcache_page implementation
like the MMU-ful CPUs do, so provide a simplified version in nommu.c
and omit flush.c from the build as appropriate.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

nommu doesn't have any form of remapping support, so ioremap, etc
become stubs which just return the casted address, doing nothing
else.

Move ioport_map(), ioport_unmap(), pci_iomap(), pci_iounmap()
into a separate file which is always built.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>