src/include: Include stdint.h since struct dimm_info uses it

struct dimm_info has all the parameter types defined in stdint.h
file. So including it.

BUG=none
BRANCH=none
TEST=Build and boot KBLRVP

Change-Id: I707523749ecf415e993b460f9613eae7be859c34
Signed-off-by: Barnali Sarkar <barnali.sarkar@intel.com>
Reviewed-on: https://review.coreboot.org/18471
Tested-by: build bot (Jenkins)
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/include/memory_info.h

@@ -16,6 +16,8 @@
 #ifndef _MEMORY_INFO_H_
 #define _MEMORY_INFO_H_
 
+#include <stdint.h>
+
 /*
  * If this table is filled and put in CBMEM,
  * then these info in CBMEM will be used to generate smbios type 17 table