amdfam10 boards: Declare get_pci1234() just once

Change-Id: I68bb9c4301c846fe2270cd7c434f35a79ab25572
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/30627
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/northbridge/amd/amdfam10/northbridge.h

@@ -17,6 +17,5 @@
 #define NORTHBRIDGE_AMD_AMDFAM10_H
 
 u32 amdfam10_scan_root_bus(struct device *root, u32 max);
-void get_pci1234(void);
 
 #endif /* NORTHBRIDGE_AMD_AMDFAM10_H */