include: Fix spelling

Change-Id: Iadc813bc8208278996b2b1aa20cfb156ec06fac9
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/3755
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/include/device/dram/ddr3.h b/src/include/device/dram/ddr3.h
index 69c072b..53a42ee 100644
--- a/src/include/device/dram/ddr3.h
+++ b/src/include/device/dram/ddr3.h
@@ -63,7 +63,7 @@
 
 /*
  * Module type (byte 3, bits 3:0) of SPD
- * This definition is specific to DDR3. DDR2 SPDs have a diferent structure.
+ * This definition is specific to DDR3. DDR2 SPDs have a different structure.
  */
 enum spd_dimm_type {
 	SPD_DIMM_TYPE_UNDEFINED			= 0x00,