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/iei/pcisa-lx-800-r10/romstage.c b/src/mainboard/iei/pcisa-lx-800-r10/romstage.c
index 452e2c2..ab0a0b4 100644
--- a/src/mainboard/iei/pcisa-lx-800-r10/romstage.c
+++ b/src/mainboard/iei/pcisa-lx-800-r10/romstage.c
@@ -37,7 +37,7 @@
 
 #define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
 
-static inline int spd_read_byte(unsigned int device, unsigned int address)
+int spd_read_byte(unsigned int device, unsigned int address)
 {
 	return smbus_read_byte(device, address);
 }