mainboard/amd/inagua: Fix a typo in comment

Change-Id: I5ace69f9a624da9556a14c498a592305a3b1c89f
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26592
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/mainboard/amd/inagua/mainboard.c

@@ -17,7 +17,7 @@
 #include <device/device.h>
 
 #include <southbridge/amd/sb800/sb800.h>
-#include "SBPLATFORM.h" 	/* Platfrom Specific Definitions */
+#include "SBPLATFORM.h"	/* Platform Specific Definitions */
 
 static void init_gpios(void)
 {