[MIPS] Declare some pci variables in header file

Declare pci_probe_only, etc. in asm-mips/pci.h file.  This will fix
some sparse warnings.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
5 files changed