x86: Define a region for device priv/plat data

Collect this together in one place, so driver model can access set it up
in a new place if needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/u-boot-spl.lds b/arch/x86/cpu/u-boot-spl.lds
index b82e53a..4a655bf 100644
--- a/arch/x86/cpu/u-boot-spl.lds
+++ b/arch/x86/cpu/u-boot-spl.lds
@@ -33,6 +33,14 @@
 	.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 
 	. = ALIGN(4);
+
+	.priv_data : {
+		__priv_data_start = .;
+		*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.priv_data*)))
+		__priv_data_end = .;
+	}
+
+	. = ALIGN(4);
 	.data : { *(.data*) }
 
 	. = ALIGN(4);