Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated value

CONFIG_SYS_GBL_DATA_SIZE has always been just a bad workarond for not
being able to use "sizeof(struct global_data)" in assembler files.
Recent experience has shown that manual synchronization is not
reliable enough.  This patch renames CONFIG_SYS_GBL_DATA_SIZE into
GENERATED_GBL_DATA_SIZE which gets automatically generated by the
asm-offsets tool.  In the result, all definitions of this value can be
deleted from the board config files.  We have to make sure that all
files that reference such data include the new <asm-offsets.h> file.

No other changes have been done yet, but it is obvious that similar
changes / simplifications can be done for other, related macro
definitions as well.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/board/amcc/bamboo/init.S b/board/amcc/bamboo/init.S
index 6925921..3d9989d 100644
--- a/board/amcc/bamboo/init.S
+++ b/board/amcc/bamboo/init.S
@@ -23,6 +23,7 @@
  * MA 02111-1307 USA
  */
 
+#include <asm-offsets.h>
 #include <ppc_asm.tmpl>
 #include <config.h>
 #include <asm/mmu.h>
diff --git a/board/amcc/bluestone/init.S b/board/amcc/bluestone/init.S
index e969fcf..4b90c8d 100644
--- a/board/amcc/bluestone/init.S
+++ b/board/amcc/bluestone/init.S
@@ -21,6 +21,7 @@
  * MA 02111-1307 USA
  */
 
+#include <asm-offsets.h>
 #include <ppc_asm.tmpl>
 #include <config.h>
 #include <asm/mmu.h>
diff --git a/board/amcc/canyonlands/init.S b/board/amcc/canyonlands/init.S
index 64d5d42..680feaa 100644
--- a/board/amcc/canyonlands/init.S
+++ b/board/amcc/canyonlands/init.S
@@ -21,6 +21,7 @@
  * MA 02111-1307 USA
  */
 
+#include <asm-offsets.h>
 #include <ppc_asm.tmpl>
 #include <config.h>
 #include <asm/mmu.h>
diff --git a/board/amcc/sequoia/init.S b/board/amcc/sequoia/init.S
index 7139aae..419ef4f 100644
--- a/board/amcc/sequoia/init.S
+++ b/board/amcc/sequoia/init.S
@@ -21,6 +21,7 @@
  * MA 02111-1307 USA
  */
 
+#include <asm-offsets.h>
 #include <ppc_asm.tmpl>
 #include <asm/mmu.h>
 #include <config.h>
diff --git a/board/amcc/yosemite/init.S b/board/amcc/yosemite/init.S
index ed3741c..d23cdc7 100644
--- a/board/amcc/yosemite/init.S
+++ b/board/amcc/yosemite/init.S
@@ -19,6 +19,7 @@
 * MA 02111-1307 USA
 */
 
+#include <asm-offsets.h>
 #include <ppc_asm.tmpl>
 #include <asm/mmu.h>
 #include <config.h>