change a readable way to fix SB800 CIMX "multi-character constant warning".

by using 'Int32FromChar' macro, instead of the ASCII code.

Signed-off-by: Kerry She <kerry.she@amd.com>
Acked-by: Marc Jones <marcj303@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6248 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/southbridge/amd/cimx_wrapper/sb800/Amd.h

@@ -49,7 +49,15 @@
 #define IOCFC 0xCFC
 #define IN
 #define OUT
-#define IMAGE_SIGNATURE 'DMA$'
+
+#ifndef Int16FromChar
+#define Int16FromChar(a,b) ((a) << 0 | (b) << 8)
+#endif
+#ifndef Int32FromChar
+#define Int32FromChar(a,b,c,d) ((a) << 0 | (b) << 8 | (c) << 16 | (d) << 24)
+#endif
+
+#define IMAGE_SIGNATURE     Int32FromChar ('$', 'A', 'M', 'D')
 
 typedef UINTN AGESA_STATUS;