PCI: designware: Export dw_pcie_readl_rc(), dw_pcie_writel_rc()

Export dw_pcie_readl_rc() and dw_pcie_writel_rc().  Many other drivers can
use these instead of implementing their own versions.  No functional change
intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index f91c7b3..b8feea4 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -141,7 +141,7 @@
 	return PCIBIOS_SUCCESSFUL;
 }
 
-static inline u32 dw_pcie_readl_rc(struct pcie_port *pp, u32 reg)
+u32 dw_pcie_readl_rc(struct pcie_port *pp, u32 reg)
 {
 	if (pp->ops->readl_rc)
 		return pp->ops->readl_rc(pp, reg);
@@ -149,7 +149,7 @@
 	return readl(pp->dbi_base + reg);
 }
 
-static inline void dw_pcie_writel_rc(struct pcie_port *pp, u32 reg, u32 val)
+void dw_pcie_writel_rc(struct pcie_port *pp, u32 reg, u32 val)
 {
 	if (pp->ops->writel_rc)
 		pp->ops->writel_rc(pp, reg, val);