Increased the size of buildTag in xip header by another 4Bytes

RTC:170829
Change-Id: I82b6a6fbe0816ab3cf205aa4e7b5dfe1fda2c8bb
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/38195
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Shakeeb A. Pasha B K <shakeebbk@in.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>
Reviewed-by: Martin Peschke <mpeschke@de.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/38206
Reviewed-by: Hostboot Team <hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

Author: Raja Das

src/import/chips/p9/xip/p9_xip_image.c

@@ -3084,8 +3084,6 @@ p9_xip_translate_header(P9XipHeader* o_dest, const P9XipHeader* i_src)
     memcpy(o_dest->iv_buildTag, i_src->iv_buildTag,
            sizeof(i_src->iv_buildTag));
 
-    o_dest->iv_reserved32 = 0;
-
     o_dest->iv_headerVersion = i_src->iv_headerVersion;
     o_dest->iv_normalized = i_src->iv_normalized;
     o_dest->iv_tocSorted = i_src->iv_tocSorted;

src/import/chips/p9/xip/p9_xip_image.h

@@ -396,10 +396,7 @@ typedef struct
     uint32_t iv_buildTime;
 
     /// Build tag, generated when releasing this image to fw
-    char iv_buildTag[16];
-
-    /// Reserved for future expansion
-    uint32_t iv_reserved32;
+    char iv_buildTag[20];
 
     //////////////////////////////////////////////////////////////////////
     // Other Information - 1-byte aligned; 8 entries