geode_lx: Move declaration to another header

Change-Id: I1dc51c5171e04e8ba917429e74a23887989d9619
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/20561
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/include/cpu/amd/car.h

@@ -4,7 +4,6 @@
 #include <arch/cpu.h>
 
 void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx);
-void done_cache_as_ram_main(void);
 void post_cache_as_ram(void);
 
 void cache_as_ram_switch_stack(void *stacktop);

src/include/cpu/amd/lxdef.h

@@ -648,6 +648,7 @@
 void cpuRegInit(int debug_clock_disable, u8 dimm0, u8 dimm1, int terminated);
 void SystemPreInit(void);
 void asmlinkage mainboard_romstage_entry(unsigned long bist);
+void done_cache_as_ram_main(void);
 #endif
 void cpubug(void);
 #endif