[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>
diff --git a/arch/mips/pci/fixup-vr4133.c b/arch/mips/pci/fixup-vr4133.c
index de5e5f6..34e651b 100644
--- a/arch/mips/pci/fixup-vr4133.c
+++ b/arch/mips/pci/fixup-vr4133.c
@@ -171,7 +171,6 @@
 
 int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
-	extern int pci_probe_only;
 	pci_probe_only = 1;
 
 #ifdef CONFIG_ROCKHOPPER
diff --git a/arch/mips/pci/pci-bcm1480.c b/arch/mips/pci/pci-bcm1480.c
index d19d262..a9060c7 100644
--- a/arch/mips/pci/pci-bcm1480.c
+++ b/arch/mips/pci/pci-bcm1480.c
@@ -202,7 +202,6 @@
 {
 	uint32_t cmdreg;
 	uint64_t reg;
-	extern int pci_probe_only;
 
 	/* CFE will assign PCI resources */
 	pci_probe_only = 1;
diff --git a/arch/mips/pci/pci-ip27.c b/arch/mips/pci/pci-ip27.c
index a185169..ce92f82 100644
--- a/arch/mips/pci/pci-ip27.c
+++ b/arch/mips/pci/pci-ip27.c
@@ -47,7 +47,6 @@
 	static int num_bridges = 0;
 	bridge_t *bridge;
 	int slot;
-	extern int pci_probe_only;
 
 	pci_probe_only = 1;
 
diff --git a/arch/mips/pci/pci-sb1250.c b/arch/mips/pci/pci-sb1250.c
index 9bc102a..bf63959 100644
--- a/arch/mips/pci/pci-sb1250.c
+++ b/arch/mips/pci/pci-sb1250.c
@@ -210,7 +210,6 @@
 	void __iomem *io_map_base;
 	uint32_t cmdreg;
 	uint64_t reg;
-	extern int pci_probe_only;
 
 	/* CFE will assign PCI resources */
 	pci_probe_only = 1;
diff --git a/include/asm-mips/pci.h b/include/asm-mips/pci.h
index 301ff2f..d3be834 100644
--- a/include/asm-mips/pci.h
+++ b/include/asm-mips/pci.h
@@ -172,4 +172,7 @@
 	return channel ? 15 : 14;
 }
 
+extern int pci_probe_only;
+extern unsigned int pcibios_max_latency;
+
 #endif /* _ASM_PCI_H */