pci: introduce CONFIG_PCI_INDIRECT_BRIDGE option

The pci_indirect.c file is always compiled when
CONFIG_PCI is defined although the indirect PCI
bridge support is not needed by every board.

Introduce a new CONFIG_PCI_INDIRECT_BRIDGE
config option and only compile indirect PCI
bridge support if this options is enabled.

Also add the new option into the configuration
files of the boards which needs that.

Compile tested for powerpc, x86, arm and nds32.
MAKEALL results:

powerpc:
  --------------------- SUMMARY ----------------------------
  Boards compiled: 641
  Boards with warnings but no errors: 2 ( ELPPC MPC8323ERDB )
  ----------------------------------------------------------
  Note: the warnings for ELPPC and MPC8323ERDB are present even
  without the actual patch.

x86:
  --------------------- SUMMARY ----------------------------
  Boards compiled: 1
  ----------------------------------------------------------

arm:
  --------------------- SUMMARY ----------------------------
  Boards compiled: 311
  ----------------------------------------------------------

nds32:
  --------------------- SUMMARY ----------------------------
  Boards compiled: 3
  ----------------------------------------------------------

Cc: Tom Rini <trini@ti.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/pci.h b/include/pci.h
index 15f583f069..f9c5148255 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -569,7 +569,9 @@ extern __inline__ void pci_set_ops(struct pci_controller *hose,
 	hose->write_dword = write_dword;
 }
 
+#ifdef CONFIG_PCI_INDIRECT_BRIDGE
 extern void pci_setup_indirect(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data);
+#endif
 
 extern phys_addr_t pci_hose_bus_to_phys(struct pci_controller* hose,
 					pci_addr_t addr, unsigned long flags);