AMD Northbridge LX: convert spd_read_byte() to non-static version

Change-Id: Ie329606852dfd7109acb694e9a9ff851b023cc63
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-on: http://review.coreboot.org/3369
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/mainboard/lippert/roadrunner-lx/romstage.c b/src/mainboard/lippert/roadrunner-lx/romstage.c
index eb406c6..2cee426 100644
--- a/src/mainboard/lippert/roadrunner-lx/romstage.c
+++ b/src/mainboard/lippert/roadrunner-lx/romstage.c
@@ -38,7 +38,7 @@
 #include "superio/ite/it8712f/early_serial.c"
 #include "northbridge/amd/lx/raminit.h"
 
-static inline int spd_read_byte(unsigned int device, unsigned int address)
+int spd_read_byte(unsigned int device, unsigned int address)
 {
 	if (device != DIMM0)
 		return 0xFF;	/* No DIMM1, don't even try. */